44 files changed, 0 insertions, 2974 deletions
diff --git a/FrontEnd/src/views/common/AppBar.css b/FrontEnd/src/views/common/AppBar.css
deleted file mode 100644
index 3ec4fa36..00000000
--- a/FrontEnd/src/views/common/AppBar.css
+++ /dev/null
@@ -1,95 +0,0 @@
-.app-bar {
-  display: flex;
-  align-items: center;
-  height: 56px;
-  position: fixed;
-  z-index: 1030;
-  top: 0;
-  left: 0;
-  right: 0;
-  background-color: var(--cru-primary-color);
-  transition: background-color 1s;
-}
-
-.app-bar .cru-avatar {
-  background-color: white;
-}
-
-.app-bar a {
-  color: var(--cru-primary-t1-color);
-  text-decoration: none;
-  margin: 0 1em;
-  transition: color 1s;
-}
-.app-bar a:hover {
-  color: var(--cru-primary-t-color);
-}
-.app-bar a.active {
-  color: var(--cru-primary-t-color);
-}
-
-.app-bar-brand {
-  display: flex;
-  align-items: center;
-}
-
-.app-bar-brand-icon {
-  height: 2em;
-}
-
-.app-bar-main-area {
-  display: flex;
-  flex-grow: 1;
-}
-
-.app-bar-link-area {
-  display: flex;
-  align-items: center;
-  flex-shrink: 0;
-}
-
-.app-bar-user-area {
-  display: flex;
-  align-items: center;
-  flex-shrink: 0;
-  margin-left: auto;
-}
-
-.small-screen .app-bar-main-area {
-  position: absolute;
-  top: 56px;
-  left: 0;
-  right: 0;
-  transform-origin: top;
-  transition: transform 0.6s, background-color 1s;
-  background-color: var(--cru-primary-color);
-  flex-direction: column;
-}
-.small-screen .app-bar-main-area.app-bar-collapse {
-  transform: scale(1, 0);
-}
-.small-screen .app-bar-main-area a {
-  text-align: left;
-  padding: 0.5em 0.5em;
-}
-.small-screen .app-bar-link-area {
-  flex-direction: column;
-  align-items: stretch;
-}
-.small-screen .app-bar-user-area {
-  flex-direction: column;
-  align-items: stretch;
-  margin-left: unset;
-}
-.small-screen .app-bar-avatar {
-  align-self: flex-end;
-}
-
-.app-bar-toggler {
-  margin-left: auto;
-  font-size: 2em;
-  margin-right: 1em;
-  color: var(--cru-primary-t-color);
-  cursor: pointer;
-  user-select: none;
-}
diff --git a/FrontEnd/src/views/common/AppBar.tsx b/FrontEnd/src/views/common/AppBar.tsx
deleted file mode 100644
index 278c70fd..00000000
--- a/FrontEnd/src/views/common/AppBar.tsx
+++ /dev/null
@@ -1,81 +0,0 @@
-import * as React from "react";
-import classnames from "classnames";
-import { useTranslation } from "react-i18next";
-import { Link, NavLink } from "react-router-dom";
-import { useMediaQuery } from "react-responsive";
-
-import { useUser } from "@/services/user";
-
-import TimelineLogo from "./TimelineLogo";
-import UserAvatar from "./user/UserAvatar";
-
-import "./AppBar.css";
-
-const AppBar: React.FC = () => {
-  const { t } = useTranslation();
-
-  const user = useUser();
-  const hasAdministrationPermission = user && user.hasAdministrationPermission;
-
-  const isSmallScreen = useMediaQuery({ maxWidth: 576 });
-
-  const [expand, setExpand] = React.useState<boolean>(false);
-  const collapse = (): void => setExpand(false);
-  const toggleExpand = (): void => setExpand(!expand);
-
-  const createLink = (
-    link: string,
-    label: React.ReactNode,
-    className?: string
-  ): React.ReactNode => (
-    <NavLink
-      to={link}
-      onClick={collapse}
-      className={({ isActive }) => classnames(className, isActive && "active")}
-    >
-      {label}
-    </NavLink>
-  );
-
-  return (
-    <nav className={classnames("app-bar", isSmallScreen && "small-screen")}>
-      <Link to="/" className="app-bar-brand active">
-        <TimelineLogo className="app-bar-brand-icon" />
-        Timeline
-      </Link>
-
-      {isSmallScreen && (
-        <i className="bi-list app-bar-toggler" onClick={toggleExpand} />
-      )}
-
-      <div
-        className={classnames(
-          "app-bar-main-area",
-          !expand && "app-bar-collapse"
-        )}
-      >
-        <div className="app-bar-link-area">
-          {createLink("/settings", t("nav.settings"))}
-          {createLink("/about", t("nav.about"))}
-          {hasAdministrationPermission &&
-            createLink("/admin", t("nav.administration"))}
-        </div>
-
-        <div className="app-bar-user-area">
-          {user != null
-            ? createLink(
-                "/",
-                <UserAvatar
-                  username={user.username}
-                  className="cru-avatar small cru-round cursor-pointer ml-auto"
-                />,
-                "app-bar-avatar"
-              )
-            : createLink("/login", t("nav.login"))}
-        </div>
-      </div>
-    </nav>
-  );
-};
-
-export default AppBar;
diff --git a/FrontEnd/src/views/common/BlobImage.tsx b/FrontEnd/src/views/common/BlobImage.tsx
deleted file mode 100644
index 5e050ebe..00000000
--- a/FrontEnd/src/views/common/BlobImage.tsx
+++ /dev/null
@@ -1,27 +0,0 @@
-import * as React from "react";
-
-const BlobImage: React.FC<
-  Omit<React.ImgHTMLAttributes<HTMLImageElement>, "src"> & {
-    blob?: Blob | unknown;
-  }
-> = (props) => {
-  const { blob, ...otherProps } = props;
-
-  const [url, setUrl] = React.useState<string | undefined>(undefined);
-
-  React.useEffect(() => {
-    if (blob instanceof Blob) {
-      const url = URL.createObjectURL(blob);
-      setUrl(url);
-      return () => {
-        URL.revokeObjectURL(url);
-      };
-    } else {
-      setUrl(undefined);
-    }
-  }, [blob]);
-
-  return <img {...otherProps} src={url} />;
-};
-
-export default BlobImage;
diff --git a/FrontEnd/src/views/common/Card.css b/FrontEnd/src/views/common/Card.css
deleted file mode 100644
index 6de0dd8e..00000000
--- a/FrontEnd/src/views/common/Card.css
+++ /dev/null
@@ -1,15 +0,0 @@
-:root {
-  --cru-card-border-radius: 8px;
-}
-
-.cru-card {
-  border: 1px solid;
-  border-color: #e9ecef;
-  border-radius: var(--cru-card-border-radius);
-  background: #fefeff;
-  transition: all 0.3s;
-}
-
-.cru-card:hover {
-  border-color: var(--cru-primary-color);
-}
diff --git a/FrontEnd/src/views/common/Card.tsx b/FrontEnd/src/views/common/Card.tsx
deleted file mode 100644
index ebbce77e..00000000
--- a/FrontEnd/src/views/common/Card.tsx
+++ /dev/null
@@ -1,27 +0,0 @@
-import classNames from "classnames";
-import * as React from "react";
-
-import "./Card.css";
-
-function _Card(
-  {
-    className,
-    children,
-    ...otherProps
-  }: React.PropsWithChildren<React.HTMLAttributes<HTMLDivElement>>,
-  ref: React.ForwardedRef<HTMLDivElement>
-): React.ReactElement | null {
-  return (
-    <div
-      ref={ref}
-      className={classNames("cru-card", className)}
-      {...otherProps}
-    >
-      {children}
-    </div>
-  );
-}
-
-const Card = React.forwardRef(_Card);
-
-export default Card;
diff --git a/FrontEnd/src/views/common/ImageCropper.css b/FrontEnd/src/views/common/ImageCropper.css
deleted file mode 100644
index 2c4d0a8c..00000000
--- a/FrontEnd/src/views/common/ImageCropper.css
+++ /dev/null
@@ -1,38 +0,0 @@
-.image-cropper-container {
-  position: relative;
-  box-sizing: border-box;
-  user-select: none;
-}
-
-.image-cropper-container img {
-  position: absolute;
-  left: 0;
-  top: 0;
-  width: 100%;
-  height: 100%;
-}
-
-.image-cropper-mask-container {
-  position: absolute;
-  left: 0;
-  top: 0;
-  right: 0;
-  bottom: 0;
-  overflow: hidden;
-}
-
-.image-cropper-mask {
-  position: absolute;
-  box-shadow: 0 0 0 10000px rgba(255, 255, 255, 0.8);
-  touch-action: none;
-}
-
-.image-cropper-handler {
-  position: absolute;
-  width: 26px;
-  height: 26px;
-  border: black solid 2px;
-  border-radius: 50%;
-  background: white;
-  touch-action: none;
-}
diff --git a/FrontEnd/src/views/common/ImageCropper.tsx b/FrontEnd/src/views/common/ImageCropper.tsx
deleted file mode 100644
index 04e17415..00000000
--- a/FrontEnd/src/views/common/ImageCropper.tsx
+++ /dev/null
@@ -1,306 +0,0 @@
-import * as React from "react";
-import classnames from "classnames";
-
-import { UiLogicError } from "@/common";
-
-import "./ImageCropper.css";
-
-export interface Clip {
-  left: number;
-  top: number;
-  width: number;
-}
-
-interface NormailizedClip extends Clip {
-  height: number;
-}
-
-interface ImageInfo {
-  width: number;
-  height: number;
-  landscape: boolean;
-  ratio: number;
-  maxClipWidth: number;
-  maxClipHeight: number;
-}
-
-interface ImageCropperSavedState {
-  clip: NormailizedClip;
-  x: number;
-  y: number;
-  pointerId: number;
-}
-
-export interface ImageCropperProps {
-  clip: Clip | null;
-  imageUrl: string;
-  onChange: (clip: Clip) => void;
-  imageElementCallback?: (element: HTMLImageElement | null) => void;
-  className?: string;
-}
-
-const ImageCropper = (props: ImageCropperProps): React.ReactElement => {
-  const { clip, imageUrl, onChange, imageElementCallback, className } = props;
-
-  const [oldState, setOldState] = React.useState<ImageCropperSavedState | null>(
-    null
-  );
-  const [imageInfo, setImageInfo] = React.useState<ImageInfo | null>(null);
-
-  const normalizeClip = (c: Clip | null | undefined): NormailizedClip => {
-    if (c == null) {
-      return { left: 0, top: 0, width: 0, height: 0 };
-    }
-
-    return {
-      left: c.left || 0,
-      top: c.top || 0,
-      width: c.width || 0,
-      height: imageInfo != null ? (c.width || 0) / imageInfo.ratio : 0,
-    };
-  };
-
-  const c = normalizeClip(clip);
-
-  const imgElementRef = React.useRef<HTMLImageElement | null>(null);
-
-  const onImageRef = React.useCallback(
-    (e: HTMLImageElement | null) => {
-      imgElementRef.current = e;
-      if (imageElementCallback != null && e == null) {
-        imageElementCallback(null);
-      }
-    },
-    [imageElementCallback]
-  );
-
-  const onImageLoad = React.useCallback(
-    (e: React.SyntheticEvent<HTMLImageElement>) => {
-      const img = e.currentTarget;
-      const landscape = img.naturalWidth >= img.naturalHeight;
-
-      const info = {
-        width: img.naturalWidth,
-        height: img.naturalHeight,
-        landscape,
-        ratio: img.naturalHeight / img.naturalWidth,
-        maxClipWidth: landscape ? img.naturalHeight / img.naturalWidth : 1,
-        maxClipHeight: landscape ? 1 : img.naturalWidth / img.naturalHeight,
-      };
-      setImageInfo(info);
-      onChange({ left: 0, top: 0, width: info.maxClipWidth });
-      if (imageElementCallback != null) {
-        imageElementCallback(img);
-      }
-    },
-    [onChange, imageElementCallback]
-  );
-
-  const onPointerDown = React.useCallback(
-    (e: React.PointerEvent) => {
-      if (oldState != null) return;
-      e.currentTarget.setPointerCapture(e.pointerId);
-      setOldState({
-        x: e.clientX,
-        y: e.clientY,
-        clip: c,
-        pointerId: e.pointerId,
-      });
-    },
-    [oldState, c]
-  );
-
-  const onPointerUp = React.useCallback(
-    (e: React.PointerEvent) => {
-      if (oldState == null || oldState.pointerId !== e.pointerId) return;
-      e.currentTarget.releasePointerCapture(e.pointerId);
-      setOldState(null);
-    },
-    [oldState]
-  );
-
-  const onPointerMove = React.useCallback(
-    (e: React.PointerEvent) => {
-      if (oldState == null) return;
-
-      const oldClip = oldState.clip;
-
-      const movement = { x: e.clientX - oldState.x, y: e.clientY - oldState.y };
-
-      const { current: imgElement } = imgElementRef;
-
-      if (imgElement == null) throw new UiLogicError("Image element is null.");
-
-      const moveRatio = {
-        x: movement.x / imgElement.width,
-        y: movement.y / imgElement.height,
-      };
-
-      const newRatio = {
-        x: oldClip.left + moveRatio.x,
-        y: oldClip.top + moveRatio.y,
-      };
-      if (newRatio.x < 0) {
-        newRatio.x = 0;
-      } else if (newRatio.x > 1 - oldClip.width) {
-        newRatio.x = 1 - oldClip.width;
-      }
-      if (newRatio.y < 0) {
-        newRatio.y = 0;
-      } else if (newRatio.y > 1 - oldClip.height) {
-        newRatio.y = 1 - oldClip.height;
-      }
-
-      onChange({ left: newRatio.x, top: newRatio.y, width: oldClip.width });
-    },
-    [oldState, onChange]
-  );
-
-  const onHandlerPointerMove = React.useCallback(
-    (e: React.PointerEvent) => {
-      if (oldState == null) return;
-
-      const oldClip = oldState.clip;
-
-      const movement = { x: e.clientX - oldState.x, y: e.clientY - oldState.y };
-
-      const ratio = imageInfo == null ? 1 : imageInfo.ratio;
-
-      const { current: imgElement } = imgElementRef;
-
-      if (imgElement == null) throw new UiLogicError("Image element is null.");
-
-      const moveRatio = {
-        x: movement.x / imgElement.width,
-        y: movement.x / imgElement.width / ratio,
-      };
-
-      const newRatio = {
-        x: oldClip.width + moveRatio.x,
-        y: oldClip.height + moveRatio.y,
-      };
-
-      const maxRatio = {
-        x: Math.min(1 - oldClip.left, newRatio.x),
-        y: Math.min(1 - oldClip.top, newRatio.y),
-      };
-
-      const maxWidthRatio = Math.min(maxRatio.x, maxRatio.y * ratio);
-
-      let newWidth;
-      if (newRatio.x < 0) {
-        newWidth = 0;
-      } else if (newRatio.x > maxWidthRatio) {
-        newWidth = maxWidthRatio;
-      } else {
-        newWidth = newRatio.x;
-      }
-
-      onChange({ left: oldClip.left, top: oldClip.top, width: newWidth });
-    },
-    [imageInfo, oldState, onChange]
-  );
-
-  const toPercentage = (n: number): string => `${n}%`;
-
-  // fuck!!! I just can't find a better way to implement this in pure css
-  const containerStyle: React.CSSProperties = (() => {
-    if (imageInfo == null) {
-      return { width: "100%", paddingTop: "100%", height: 0 };
-    } else {
-      if (imageInfo.ratio > 1) {
-        return {
-          width: toPercentage(100 / imageInfo.ratio),
-          paddingTop: "100%",
-          height: 0,
-        };
-      } else {
-        return {
-          width: "100%",
-          paddingTop: toPercentage(100 * imageInfo.ratio),
-          height: 0,
-        };
-      }
-    }
-  })();
-
-  return (
-    <div
-      className={classnames("image-cropper-container", className)}
-      style={containerStyle}
-    >
-      <img ref={onImageRef} src={imageUrl} onLoad={onImageLoad} alt="to crop" />
-      <div className="image-cropper-mask-container">
-        <div
-          className="image-cropper-mask"
-          style={{
-            left: toPercentage(c.left * 100),
-            top: toPercentage(c.top * 100),
-            width: toPercentage(c.width * 100),
-            height: toPercentage(c.height * 100),
-          }}
-          onPointerMove={onPointerMove}
-          onPointerDown={onPointerDown}
-          onPointerUp={onPointerUp}
-        />
-      </div>
-      <div
-        className="image-cropper-handler"
-        style={{
-          left: `calc(${(c.left + c.width) * 100}% - 15px)`,
-          top: `calc(${(c.top + c.height) * 100}% - 15px)`,
-        }}
-        onPointerMove={onHandlerPointerMove}
-        onPointerDown={onPointerDown}
-        onPointerUp={onPointerUp}
-      />
-    </div>
-  );
-};
-
-export default ImageCropper;
-
-export function applyClipToImage(
-  image: HTMLImageElement,
-  clip: Clip,
-  mimeType: string
-): Promise<Blob> {
-  return new Promise((resolve, reject) => {
-    const naturalSize = {
-      width: image.naturalWidth,
-      height: image.naturalHeight,
-    };
-    const clipArea = {
-      x: naturalSize.width * clip.left,
-      y: naturalSize.height * clip.top,
-      length: naturalSize.width * clip.width,
-    };
-
-    const canvas = document.createElement("canvas");
-    canvas.width = clipArea.length;
-    canvas.height = clipArea.length;
-    const context = canvas.getContext("2d");
-
-    if (context == null) throw new Error("Failed to create context.");
-
-    context.drawImage(
-      image,
-      clipArea.x,
-      clipArea.y,
-      clipArea.length,
-      clipArea.length,
-      0,
-      0,
-      clipArea.length,
-      clipArea.length
-    );
-
-    canvas.toBlob((blob) => {
-      if (blob == null) {
-        reject(new Error("canvas.toBlob returns null"));
-      } else {
-        resolve(blob);
-      }
-    }, mimeType);
-  });
-}
diff --git a/FrontEnd/src/views/common/LoadFailReload.tsx b/FrontEnd/src/views/common/LoadFailReload.tsx
deleted file mode 100644
index 81ba1f67..00000000
--- a/FrontEnd/src/views/common/LoadFailReload.tsx
+++ /dev/null
@@ -1,37 +0,0 @@
-import * as React from "react";
-import { Trans } from "react-i18next";
-
-export interface LoadFailReloadProps {
-  className?: string;
-  style?: React.CSSProperties;
-  onReload: () => void;
-}
-
-const LoadFailReload: React.FC<LoadFailReloadProps> = ({
-  onReload,
-  className,
-  style,
-}) => {
-  return (
-    <Trans
-      i18nKey="loadFailReload"
-      parent="div"
-      className={className}
-      style={style}
-    >
-      0
-      <a
-        href="#"
-        onClick={(e) => {
-          onReload();
-          e.preventDefault();
-        }}
-      >
-        1
-      </a>
-      2
-    </Trans>
-  );
-};
-
-export default LoadFailReload;
diff --git a/FrontEnd/src/views/common/LoadingPage.tsx b/FrontEnd/src/views/common/LoadingPage.tsx
deleted file mode 100644
index 35ee1aa8..00000000
--- a/FrontEnd/src/views/common/LoadingPage.tsx
+++ /dev/null
@@ -1,13 +0,0 @@
-import * as React from "react";
-
-import Spinner from "./Spinner";
-
-const LoadingPage: React.FC = () => {
-  return (
-    <div className="position-fixed w-100 h-100 d-flex justify-content-center align-items-center">
-      <Spinner />
-    </div>
-  );
-};
-
-export default LoadingPage;
diff --git a/FrontEnd/src/views/common/SearchInput.css b/FrontEnd/src/views/common/SearchInput.css
deleted file mode 100644
index f0503016..00000000
--- a/FrontEnd/src/views/common/SearchInput.css
+++ /dev/null
@@ -1,8 +0,0 @@
-.cru-search-input {
-  display: flex;
-  flex-wrap: wrap;
-}
-
-.cru-search-input-input {
-  width: 100%;
-}
diff --git a/FrontEnd/src/views/common/SearchInput.tsx b/FrontEnd/src/views/common/SearchInput.tsx
deleted file mode 100644
index 9d644ab7..00000000
--- a/FrontEnd/src/views/common/SearchInput.tsx
+++ /dev/null
@@ -1,79 +0,0 @@
-import { useCallback } from "react";
-import * as React from "react";
-import classnames from "classnames";
-import { useTranslation } from "react-i18next";
-
-import LoadingButton from "./button/LoadingButton";
-
-import "./SearchInput.css";
-
-export interface SearchInputProps {
-  value: string;
-  onChange: (value: string) => void;
-  onButtonClick: () => void;
-  className?: string;
-  loading?: boolean;
-  buttonText?: string;
-  placeholder?: string;
-  additionalButton?: React.ReactNode;
-  alwaysOneline?: boolean;
-}
-
-const SearchInput: React.FC<SearchInputProps> = (props) => {
-  const { onChange, onButtonClick, alwaysOneline } = props;
-
-  const { t } = useTranslation();
-
-  const onInputChange = useCallback(
-    (event: React.ChangeEvent<HTMLInputElement>): void => {
-      onChange(event.currentTarget.value);
-    },
-    [onChange]
-  );
-
-  const onInputKeyPress = useCallback(
-    (event: React.KeyboardEvent<HTMLInputElement>): void => {
-      if (event.key === "Enter") {
-        onButtonClick();
-        event.preventDefault();
-      }
-    },
-    [onButtonClick]
-  );
-
-  return (
-    <div
-      className={classnames(
-        "cru-search-input",
-        alwaysOneline ? "flex-nowrap" : "flex-sm-nowrap",
-        props.className
-      )}
-    >
-      <input
-        type="text"
-        className="cru-search-input-input me-sm-2 flex-grow-1"
-        value={props.value}
-        onChange={onInputChange}
-        onKeyPress={onInputKeyPress}
-        placeholder={props.placeholder}
-      />
-      {props.additionalButton ? (
-        <div className="mt-2 mt-sm-0 flex-shrink-0 order-sm-last ms-sm-2">
-          {props.additionalButton}
-        </div>
-      ) : null}
-      <div
-        className={classnames(
-          alwaysOneline ? "mt-0 ms-2" : "mt-2 mt-sm-0 ms-auto ms-sm-0",
-          "flex-shrink-0"
-        )}
-      >
-        <LoadingButton loading={props.loading} onClick={props.onButtonClick}>
-          {props.buttonText ?? t("search")}
-        </LoadingButton>
-      </div>
-    </div>
-  );
-};
-
-export default SearchInput;
diff --git a/FrontEnd/src/views/common/Skeleton.css b/FrontEnd/src/views/common/Skeleton.css
deleted file mode 100644
index db1a1c34..00000000
--- a/FrontEnd/src/views/common/Skeleton.css
+++ /dev/null
@@ -1,14 +0,0 @@
-.cru-skeleton {
-  padding: 0 1em;
-}
-
-.cru-skeleton-line {
-  height: 1em;
-  background-color: #e6e6e6;
-  margin: 0.7em 0;
-  border-radius: 0.2em;
-}
-
-.cru-skeleton-line.last {
-  width: 50%;
-}
diff --git a/FrontEnd/src/views/common/Skeleton.tsx b/FrontEnd/src/views/common/Skeleton.tsx
deleted file mode 100644
index 3b149db9..00000000
--- a/FrontEnd/src/views/common/Skeleton.tsx
+++ /dev/null
@@ -1,32 +0,0 @@
-import * as React from "react";
-import classnames from "classnames";
-import range from "lodash/range";
-
-import "./Skeleton.css";
-
-export interface SkeletonProps {
-  lineNumber?: number;
-  className?: string;
-  style?: React.CSSProperties;
-}
-
-const Skeleton: React.FC<SkeletonProps> = (props) => {
-  const { lineNumber: lineNumberProps, className, style } = props;
-  const lineNumber = lineNumberProps ?? 3;
-
-  return (
-    <div className={classnames(className, "cru-skeleton")} style={style}>
-      {range(lineNumber).map((i) => (
-        <div
-          key={i}
-          className={classnames(
-            "cru-skeleton-line",
-            i === lineNumber - 1 && "last"
-          )}
-        />
-      ))}
-    </div>
-  );
-};
-
-export default Skeleton;
diff --git a/FrontEnd/src/views/common/Spinner.css b/FrontEnd/src/views/common/Spinner.css
deleted file mode 100644
index a1de68d2..00000000
--- a/FrontEnd/src/views/common/Spinner.css
+++ /dev/null
@@ -1,13 +0,0 @@
-@keyframes cru-spinner-animation {
-  from {
-    transform: scale(0,0);
-  }
-}
-
-.cru-spinner {
-  display: inline-block;
-  animation: cru-spinner-animation 0.5s infinite alternate;
-  background-color: currentColor;
-  border-radius: 50%;
-  transform-origin: center;
-}
diff --git a/FrontEnd/src/views/common/Spinner.tsx b/FrontEnd/src/views/common/Spinner.tsx
deleted file mode 100644
index e99a9d1b..00000000
--- a/FrontEnd/src/views/common/Spinner.tsx
+++ /dev/null
@@ -1,43 +0,0 @@
-import * as React from "react";
-import classnames from "classnames";
-
-import { PaletteColorType } from "@/palette";
-
-import "./Spinner.css";
-
-export interface SpinnerProps {
-  size?: "sm" | "md" | "lg" | number | string;
-  color?: PaletteColorType;
-  className?: string;
-  style?: React.CSSProperties;
-}
-
-export default function Spinner(
-  props: SpinnerProps
-): React.ReactElement | null {
-  const { size, color, className, style } = props;
-  const calculatedSize =
-    size === "sm"
-      ? "18px"
-      : size === "md"
-      ? "30px"
-      : size === "lg"
-      ? "42px"
-      : typeof size === "number"
-      ? size
-      : size == null
-      ? "20px"
-      : size;
-  const calculatedColor = color ?? "primary";
-
-  return (
-    <span
-      className={classnames(
-        "cru-spinner",
-        `cru-color-${calculatedColor}`,
-        className
-      )}
-      style={{ width: calculatedSize, height: calculatedSize, ...style }}
-    />
-  );
-}
diff --git a/FrontEnd/src/views/common/TimelineLogo.tsx b/FrontEnd/src/views/common/TimelineLogo.tsx
deleted file mode 100644
index e06ed0f5..00000000
--- a/FrontEnd/src/views/common/TimelineLogo.tsx
+++ /dev/null
@@ -1,27 +0,0 @@
-import { SVGAttributes } from "react";
-import * as React from "react";
-
-export interface TimelineLogoProps extends SVGAttributes<SVGElement> {
-  color?: string;
-}
-
-const TimelineLogo: React.FC<TimelineLogoProps> = (props) => {
-  const { color, ...forwardProps } = props;
-  const coercedColor = color ?? "currentcolor";
-  return (
-    <svg
-      className={props.className}
-      viewBox="0 0 100 100"
-      fill="none"
-      strokeWidth="12"
-      stroke={coercedColor}
-      {...forwardProps}
-    >
-      <line x1="50" y1="0" x2="50" y2="25" />
-      <circle cx="50" cy="50" r="22" />
-      <line x1="50" y1="75" x2="50" y2="100" />
-    </svg>
-  );
-};
-
-export default TimelineLogo;
diff --git a/FrontEnd/src/views/common/alert/AlertHost.tsx b/FrontEnd/src/views/common/alert/AlertHost.tsx
deleted file mode 100644
index 42074781..00000000
--- a/FrontEnd/src/views/common/alert/AlertHost.tsx
+++ /dev/null
@@ -1,113 +0,0 @@
-import * as React from "react";
-import without from "lodash/without";
-import { useTranslation } from "react-i18next";
-import classNames from "classnames";
-
-import { alertService, AlertInfoEx, AlertInfo } from "@/services/alert";
-import { convertI18nText } from "@/common";
-
-import IconButton from "../button/IconButton";
-
-import "./alert.css";
-
-interface AutoCloseAlertProps {
-  alert: AlertInfo;
-  close: () => void;
-}
-
-export const AutoCloseAlert: React.FC<AutoCloseAlertProps> = (props) => {
-  const { alert, close } = props;
-  const { dismissTime } = alert;
-
-  const { t } = useTranslation();
-
-  const timerTag = React.useRef<number | null>(null);
-  const closeHandler = React.useRef<(() => void) | null>(null);
-
-  React.useEffect(() => {
-    closeHandler.current = close;
-  }, [close]);
-
-  React.useEffect(() => {
-    const tag =
-      dismissTime === "never"
-        ? null
-        : typeof dismissTime === "number"
-        ? window.setTimeout(() => closeHandler.current?.(), dismissTime)
-        : window.setTimeout(() => closeHandler.current?.(), 5000);
-    timerTag.current = tag;
-    return () => {
-      if (tag != null) {
-        window.clearTimeout(tag);
-      }
-    };
-  }, [dismissTime]);
-
-  const cancelTimer = (): void => {
-    const { current: tag } = timerTag;
-    if (tag != null) {
-      window.clearTimeout(tag);
-    }
-  };
-
-  return (
-    <div
-      className={classNames(
-        "m-3 cru-alert",
-        "cru-" + (alert.type ?? "primary")
-      )}
-      onClick={cancelTimer}
-    >
-      <div className="cru-alert-content">
-        {(() => {
-          const { message, customMessage } = alert;
-          if (customMessage != null) {
-            return customMessage;
-          } else {
-            return convertI18nText(message, t);
-          }
-        })()}
-      </div>
-      <div className="cru-alert-close-button-container">
-        <IconButton
-          icon="x"
-          className="cru-alert-close-button"
-          onClick={close}
-        />
-      </div>
-    </div>
-  );
-};
-
-const AlertHost: React.FC = () => {
-  const [alerts, setAlerts] = React.useState<AlertInfoEx[]>([]);
-
-  React.useEffect(() => {
-    const consume = (alert: AlertInfoEx): void => {
-      setAlerts((old) => [...old, alert]);
-    };
-
-    alertService.registerConsumer(consume);
-    return () => {
-      alertService.unregisterConsumer(consume);
-    };
-  }, []);
-
-  return (
-    <div className="alert-container">
-      {alerts.map((alert) => {
-        return (
-          <AutoCloseAlert
-            key={alert.id}
-            alert={alert}
-            close={() => {
-              setAlerts((old) => without(old, alert));
-            }}
-          />
-        );
-      })}
-    </div>
-  );
-};
-
-export default AlertHost;
diff --git a/FrontEnd/src/views/common/alert/alert.css b/FrontEnd/src/views/common/alert/alert.css
deleted file mode 100644
index fc15e3cb..00000000
--- a/FrontEnd/src/views/common/alert/alert.css
+++ /dev/null
@@ -1,33 +0,0 @@
-.alert-container {
-  position: fixed;
-  z-index: 1040;
-}
-
-.cru-alert {
-  border-radius: 5px;
-  border: var(--cru-theme-color) 1px solid;
-  color: var(--cru-theme-t-color);
-  background-color: var(--cru-theme-r1-color);
-
-  display: flex;
-  overflow: hidden;
-}
-
-.cru-alert-content {
-  padding: 0.5em 2em;
-}
-
-.cru-alert-close-button-container {
-  flex-shrink: 0;
-  margin-left: auto;
-  width: 2em;
-  text-align: center;
-  display: flex;
-  align-items: center;
-  justify-content: center;
-  background-color: var(--cru-theme-t-color);
-}
-
-.cru-alert-close-button {
-  color: var(--cru-theme-color);
-}
diff --git a/FrontEnd/src/views/common/button/Button.css b/FrontEnd/src/views/common/button/Button.css
deleted file mode 100644
index c34176f6..00000000
--- a/FrontEnd/src/views/common/button/Button.css
+++ /dev/null
@@ -1,51 +0,0 @@
-.cru-button:not(.outline) {
-  color: var(--cru-theme-t-color);
-  cursor: pointer;
-  padding: 0.2em 0.5em;
-  border-radius: 0.2em;
-  border: none;
-  transition: all 0.5s;
-  background-color: var(--cru-theme-color);
-}
-
-.cru-button:not(.outline):hover {
-  background-color: var(--cru-theme-f1-color);
-}
-
-.cru-button:not(.outline):active {
-  background-color: var(--cru-theme-f2-color);
-}
-
-.cru-button:not(.outline):disabled {
-  background-color: var(--cru-disable-color);
-  cursor: auto;
-}
-
-.cru-button.outline {
-  color: var(--cru-theme-color);
-  border: var(--cru-theme-color) 1px solid;
-  cursor: pointer;
-  padding: 0.2em 0.5em;
-  border-radius: 0.2em;
-  transition: all 0.6s;
-  background-color: white;
-}
-
-.cru-button.outline:hover {
-  color: var(--cru-theme-f1-color);
-  border-color: var(--cru-theme-f1-color);
-  background-color: var(--cru-background-color);
-}
-
-.cru-button.outline:active {
-  color: var(--cru-theme-f2-color);
-  border-color: var(--cru-theme-f2-color);
-  background-color: var(--cru-background-1-color);
-}
-
-.cru-button.outline:disabled {
-  color: var(--cru-disable-color);
-  border-color: var(--cru-disable-color);
-  background-color: white;
-  cursor: auto;
-}
diff --git a/FrontEnd/src/views/common/button/Button.tsx b/FrontEnd/src/views/common/button/Button.tsx
deleted file mode 100644
index be605328..00000000
--- a/FrontEnd/src/views/common/button/Button.tsx
+++ /dev/null
@@ -1,47 +0,0 @@
-import { ComponentPropsWithoutRef, Ref } from "react";
-import classNames from "classnames";
-
-import { I18nText, useC } from "@/common";
-import { PaletteColorType } from "@/palette";
-
-import "./Button.css";
-
-interface ButtonProps extends ComponentPropsWithoutRef<"button"> {
-  color?: PaletteColorType;
-  text?: I18nText;
-  outline?: boolean;
-  buttonRef?: Ref<HTMLButtonElement> | null;
-}
-
-export default function Button(props: ButtonProps) {
-  const {
-    buttonRef,
-    color,
-    text,
-    outline,
-    className,
-    children,
-    ...otherProps
-  } = props;
-
-  if (text != null && children != null) {
-    console.warn("You can't set both text and children props.");
-  }
-
-  const c = useC();
-
-  return (
-    <button
-      ref={buttonRef}
-      className={classNames(
-        "cru-" + (color ?? "primary"),
-        "cru-button",
-        outline && "outline",
-        className,
-      )}
-      {...otherProps}
-    >
-      {text != null ? c(text) : children}
-    </button>
-  );
-}
diff --git a/FrontEnd/src/views/common/button/FlatButton.css b/FrontEnd/src/views/common/button/FlatButton.css
deleted file mode 100644
index f0d33153..00000000
--- a/FrontEnd/src/views/common/button/FlatButton.css
+++ /dev/null
@@ -1,18 +0,0 @@
-.cru-flat-button {
-  cursor: pointer;
-  padding: 0.2em 0.5em;
-  border-radius: 0.2em;
-  border: none;
-  background-color: transparent;
-  transition: all 0.6s;
-  color: var(--cru-theme-color);
-}
-
-.cru-flat-button.disabled {
-  color: var(--cru-theme-l1-color);
-  cursor: default;
-}
-
-.cru-flat-button:hover:not(.disabled) {
-  background-color: #e9ecef;
-}
diff --git a/FrontEnd/src/views/common/button/FlatButton.tsx b/FrontEnd/src/views/common/button/FlatButton.tsx
deleted file mode 100644
index 49912b68..00000000
--- a/FrontEnd/src/views/common/button/FlatButton.tsx
+++ /dev/null
@@ -1,37 +0,0 @@
-import { ComponentPropsWithoutRef, Ref } from "react";
-import classNames from "classnames";
-
-import { I18nText, useC } from "@/common";
-import { PaletteColorType } from "@/palette";
-
-import "./FlatButton.css";
-
-interface FlatButtonProps extends ComponentPropsWithoutRef<"button"> {
-  color?: PaletteColorType;
-  text?: I18nText;
-  buttonRef?: Ref<HTMLButtonElement> | null;
-}
-
-export default function FlatButton(props: FlatButtonProps) {
-  const { color, text, className, children, buttonRef, ...otherProps } = props;
-
-  if (text != null && children != null) {
-    console.warn("You can't set both text and children props.");
-  }
-
-  const c = useC();
-
-  return (
-    <button
-      ref={buttonRef}
-      className={classNames(
-        "cru-" + (color ?? "primary"),
-        "cru-flat-button",
-        className,
-      )}
-      {...otherProps}
-    >
-      {text != null ? c(text) : children}
-    </button>
-  );
-}
diff --git a/FrontEnd/src/views/common/button/IconButton.css b/FrontEnd/src/views/common/button/IconButton.css
deleted file mode 100644
index 45fb103c..00000000
--- a/FrontEnd/src/views/common/button/IconButton.css
+++ /dev/null
@@ -1,10 +0,0 @@
-.cru-icon-button {
-  color: var(--cru-theme-color);
-  font-size: 1.4rem;
-  background: none;
-  border: none;
-}
-
-.cru-icon-button.large {
-  font-size: 1.6rem;
-}
diff --git a/FrontEnd/src/views/common/button/IconButton.tsx b/FrontEnd/src/views/common/button/IconButton.tsx
deleted file mode 100644
index 652a8b09..00000000
--- a/FrontEnd/src/views/common/button/IconButton.tsx
+++ /dev/null
@@ -1,29 +0,0 @@
-import { ComponentPropsWithoutRef } from "react";
-import classNames from "classnames";
-
-import { PaletteColorType } from "@/palette";
-
-import "./IconButton.css";
-
-interface IconButtonProps extends ComponentPropsWithoutRef<"i"> {
-  icon: string;
-  color?: PaletteColorType;
-  large?: boolean;
-}
-
-export default function IconButton(props: IconButtonProps) {
-  const { icon, color, className, large, ...otherProps } = props;
-
-  return (
-    <button
-      className={classNames(
-        "cru-icon-button",
-        large && "large",
-        "bi-" + icon,
-        color ? "cru-" + color : "cru-primary",
-        className,
-      )}
-      {...otherProps}
-    />
-  );
-}
diff --git a/FrontEnd/src/views/common/button/LoadingButton.tsx b/FrontEnd/src/views/common/button/LoadingButton.tsx
deleted file mode 100644
index fceaec27..00000000
--- a/FrontEnd/src/views/common/button/LoadingButton.tsx
+++ /dev/null
@@ -1,40 +0,0 @@
-import * as React from "react";
-import classNames from "classnames";
-import { useTranslation } from "react-i18next";
-
-import { convertI18nText, I18nText } from "@/common";
-import { PaletteColorType } from "@/palette";
-
-import Spinner from "../Spinner";
-
-interface LoadingButtonProps extends React.ComponentPropsWithoutRef<"button"> {
-  color?: PaletteColorType;
-  text?: I18nText;
-  loading?: boolean;
-}
-
-function LoadingButton(props: LoadingButtonProps): JSX.Element {
-  const { t } = useTranslation();
-
-  const { color, text, loading, className, children, ...otherProps } = props;
-
-  if (text != null && children != null) {
-    console.warn("You can't set both text and children props.");
-  }
-
-  return (
-    <button
-      className={classNames(
-        "cru-" + (color ?? "primary"),
-        "cru-button outline",
-        className,
-      )}
-      {...otherProps}
-    >
-      {text != null ? convertI18nText(text, t) : children}
-      {loading && <Spinner />}
-    </button>
-  );
-}
-
-export default LoadingButton;
diff --git a/FrontEnd/src/views/common/button/index.tsx b/FrontEnd/src/views/common/button/index.tsx
deleted file mode 100644
index cff5ba3f..00000000
--- a/FrontEnd/src/views/common/button/index.tsx
+++ /dev/null
@@ -1,6 +0,0 @@
-import Button from "./Button";
-import FlatButton from "./FlatButton";
-import IconButton from "./IconButton";
-import LoadingButton from "./LoadingButton";
-
-export { Button, FlatButton, IconButton, LoadingButton };
diff --git a/FrontEnd/src/views/common/dialog/ConfirmDialog.tsx b/FrontEnd/src/views/common/dialog/ConfirmDialog.tsx
deleted file mode 100644
index 8c2cea5a..00000000
--- a/FrontEnd/src/views/common/dialog/ConfirmDialog.tsx
+++ /dev/null
@@ -1,43 +0,0 @@
-import { convertI18nText, I18nText } from "@/common";
-import * as React from "react";
-import { useTranslation } from "react-i18next";
-
-import Button from "../button/Button";
-import Dialog from "./Dialog";
-
-const ConfirmDialog: React.FC<{
-  open: boolean;
-  onClose: () => void;
-  onConfirm: () => void;
-  title: I18nText;
-  body: I18nText;
-}> = ({ open, onClose, onConfirm, title, body }) => {
-  const { t } = useTranslation();
-
-  return (
-    <Dialog onClose={onClose} open={open}>
-      <h3 className="cru-color-danger">{convertI18nText(title, t)}</h3>
-      <hr />
-      <p>{convertI18nText(body, t)}</p>
-      <hr />
-      <div className="cru-dialog-bottom-area">
-        <Button
-          text="operationDialog.cancel"
-          color="secondary"
-          outline
-          onClick={onClose}
-        />
-        <Button
-          text="operationDialog.confirm"
-          color="danger"
-          onClick={() => {
-            onConfirm();
-            onClose();
-          }}
-        />
-      </div>
-    </Dialog>
-  );
-};
-
-export default ConfirmDialog;
diff --git a/FrontEnd/src/views/common/dialog/Dialog.css b/FrontEnd/src/views/common/dialog/Dialog.css
deleted file mode 100644
index 21ea52fc..00000000
--- a/FrontEnd/src/views/common/dialog/Dialog.css
+++ /dev/null
@@ -1,55 +0,0 @@
-.cru-dialog-overlay {
-  position: fixed;
-  z-index: 1040;
-  left: 0;
-  top: 0;
-  right: 0;
-  bottom: 0;
-  background-color: rgba(255, 255, 255, 0.92);
-
-  display: flex;
-  padding: 2em;
-
-  overflow: auto;
-}
-
-.cru-dialog-container {
-  max-width: 100%;
-  min-width: 30vw;
-
-  margin: auto;
-
-  border: var(--cru-primary-color) 1px solid;
-  border-radius: 5px;
-  padding: 1.5em;
-  background-color: white;
-}
-
-.cru-dialog-bottom-area {
-  display: flex;
-  justify-content: flex-end;
-}
-
-.cru-dialog-bottom-area > * {
-  margin: 0 0.5em;
-}
-
-.cru-dialog-enter .cru-dialog-container {
-  transform: scale(0, 0);
-  opacity: 0;
-  transform-origin: center;
-}
-
-.cru-dialog-enter-active .cru-dialog-container {
-  transform: scale(1, 1);
-  opacity: 1;
-  transition: transform 0.3s, opacity 0.3s;
-  transform-origin: center;
-}
-
-.cru-dialog-exit-active .cru-dialog-container {
-  transition: transform 0.3s, opacity 0.3s;
-  transform: scale(0, 0);
-  opacity: 0;
-  transform-origin: center;
-}
diff --git a/FrontEnd/src/views/common/dialog/Dialog.tsx b/FrontEnd/src/views/common/dialog/Dialog.tsx
deleted file mode 100644
index 923c636b..00000000
--- a/FrontEnd/src/views/common/dialog/Dialog.tsx
+++ /dev/null
@@ -1,51 +0,0 @@
-import { ReactNode } from "react";
-import ReactDOM from "react-dom";
-import { CSSTransition } from "react-transition-group";
-
-import "./Dialog.css";
-
-const optionalPortalElement = document.getElementById("portal");
-if (optionalPortalElement == null) {
-  throw new Error("Portal element not found");
-}
-const portalElement = optionalPortalElement;
-
-interface DialogProps {
-  onClose: () => void;
-  open: boolean;
-  children?: ReactNode;
-  disableCloseOnClickOnOverlay?: boolean;
-}
-
-export default function Dialog(props: DialogProps) {
-  const { open, onClose, children, disableCloseOnClickOnOverlay } = props;
-
-  return ReactDOM.createPortal(
-    <CSSTransition
-      mountOnEnter
-      unmountOnExit
-      in={open}
-      timeout={300}
-      classNames="cru-dialog"
-    >
-      <div
-        className="cru-dialog-overlay"
-        onPointerDown={
-          disableCloseOnClickOnOverlay
-            ? undefined
-            : () => {
-                onClose();
-              }
-        }
-      >
-        <div
-          className="cru-dialog-container"
-          onPointerDown={(e) => e.stopPropagation()}
-        >
-          {children}
-        </div>
-      </div>
-    </CSSTransition>,
-    portalElement,
-  );
-}
diff --git a/FrontEnd/src/views/common/dialog/FullPageDialog.css b/FrontEnd/src/views/common/dialog/FullPageDialog.css
deleted file mode 100644
index 2f1fc636..00000000
--- a/FrontEnd/src/views/common/dialog/FullPageDialog.css
+++ /dev/null
@@ -1,44 +0,0 @@
-.cru-full-page {
-  position: fixed;
-  z-index: 1030;
-  left: 0;
-  top: 0;
-  right: 0;
-  bottom: 0;
-  background-color: white;
-  padding-top: 56px;
-}
-
-.cru-full-page-top-bar {
-  height: 56px;
-  position: absolute;
-  top: 0;
-  left: 0;
-  right: 0;
-  z-index: 1;
-  background-color: var(--cru-primary-color);
-  display: flex;
-  align-items: center;
-}
-
-.cru-full-page-content-container {
-  overflow: scroll;
-}
-
-.cru-full-page-back-button {
-  color: var(--cru-primary-t-color);
-}
-
-.cru-full-page-enter {
-  transform: translate(100%, 0);
-}
-
-.cru-full-page-enter-active {
-  transform: none;
-  transition: transform 0.3s;
-}
-
-.cru-full-page-exit-active {
-  transition: transform 0.3s;
-  transform: translate(100%, 0);
-}
diff --git a/FrontEnd/src/views/common/dialog/FullPageDialog.tsx b/FrontEnd/src/views/common/dialog/FullPageDialog.tsx
deleted file mode 100644
index 6368fc0a..00000000
--- a/FrontEnd/src/views/common/dialog/FullPageDialog.tsx
+++ /dev/null
@@ -1,53 +0,0 @@
-import * as React from "react";
-import { createPortal } from "react-dom";
-import classnames from "classnames";
-import { CSSTransition } from "react-transition-group";
-
-import "./FullPageDialog.css";
-import IconButton from "../button/IconButton";
-
-export interface FullPageDialogProps {
-  show: boolean;
-  onBack: () => void;
-  contentContainerClassName?: string;
-  children: React.ReactNode;
-}
-
-const FullPageDialog: React.FC<FullPageDialogProps> = ({
-  show,
-  onBack,
-  children,
-  contentContainerClassName,
-}) => {
-  return createPortal(
-    <CSSTransition
-      mountOnEnter
-      unmountOnExit
-      in={show}
-      timeout={300}
-      classNames="cru-full-page"
-    >
-      <div className="cru-full-page">
-        <div className="cru-full-page-top-bar">
-          <IconButton
-            icon="arrow-left"
-            className="ms-3 cru-full-page-back-button"
-            onClick={onBack}
-          />
-        </div>
-        <div
-          className={classnames(
-            "cru-full-page-content-container",
-            contentContainerClassName
-          )}
-        >
-          {children}
-        </div>
-      </div>
-    </CSSTransition>,
-    // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
-    document.getElementById("portal")!
-  );
-};
-
-export default FullPageDialog;
diff --git a/FrontEnd/src/views/common/dialog/OperationDialog.css b/FrontEnd/src/views/common/dialog/OperationDialog.css
deleted file mode 100644
index 2f7617d0..00000000
--- a/FrontEnd/src/views/common/dialog/OperationDialog.css
+++ /dev/null
@@ -1,25 +0,0 @@
-.cru-operation-dialog-group {
-  display: block;
-  margin: 0.4em 0;
-}
-
-.cru-operation-dialog-label {
-  display: block;
-  color: var(--cru-primary-color);
-}
-
-.cru-operation-dialog-inline-label {
-  margin-inline-start: 0.5em;
-}
-
-.cru-operation-dialog-error-text {
-  display: block;
-  font-size: 0.8em;
-  color: var(--cru-danger-color);
-}
-
-.cru-operation-dialog-helper-text {
-  display: block;
-  font-size: 0.8em;
-  color: var(--cru-primary-color);
-}
diff --git a/FrontEnd/src/views/common/dialog/OperationDialog.tsx b/FrontEnd/src/views/common/dialog/OperationDialog.tsx
deleted file mode 100644
index 71be030a..00000000
--- a/FrontEnd/src/views/common/dialog/OperationDialog.tsx
+++ /dev/null
@@ -1,531 +0,0 @@
-import { useState } from "react";
-import * as React from "react";
-import { useTranslation } from "react-i18next";
-import { TwitterPicker } from "react-color";
-import classNames from "classnames";
-import moment from "moment";
-
-import { convertI18nText, I18nText, UiLogicError } from "@/common";
-
-import { PaletteColorType } from "@/palette";
-
-import Button from "../button/Button";
-import LoadingButton from "../button/LoadingButton";
-import Dialog from "./Dialog";
-
-import "./OperationDialog.css";
-
-interface DefaultErrorPromptProps {
-  error?: string;
-}
-
-const DefaultErrorPrompt: React.FC<DefaultErrorPromptProps> = (props) => {
-  const { t } = useTranslation();
-
-  let result = <p className="cru-color-danger">{t("operationDialog.error")}</p>;
-
-  if (props.error != null) {
-    result = (
-      <>
-        {result}
-        <p className="cru-color-danger">{props.error}</p>
-      </>
-    );
-  }
-
-  return result;
-};
-
-export interface OperationDialogTextInput {
-  type: "text";
-  label?: I18nText;
-  password?: boolean;
-  initValue?: string;
-  textFieldProps?: Omit<
-    React.InputHTMLAttributes<HTMLInputElement>,
-    "type" | "value" | "onChange"
-  >;
-  helperText?: string;
-}
-
-export interface OperationDialogBoolInput {
-  type: "bool";
-  label: I18nText;
-  initValue?: boolean;
-  helperText?: string;
-}
-
-export interface OperationDialogSelectInputOption {
-  value: string;
-  label: I18nText;
-  icon?: React.ReactElement;
-}
-
-export interface OperationDialogSelectInput {
-  type: "select";
-  label: I18nText;
-  options: OperationDialogSelectInputOption[];
-  initValue?: string;
-}
-
-export interface OperationDialogColorInput {
-  type: "color";
-  label?: I18nText;
-  initValue?: string | null;
-  canBeNull?: boolean;
-}
-
-export interface OperationDialogDateTimeInput {
-  type: "datetime";
-  label?: I18nText;
-  initValue?: string;
-  helperText?: string;
-}
-
-export type OperationDialogInput =
-  | OperationDialogTextInput
-  | OperationDialogBoolInput
-  | OperationDialogSelectInput
-  | OperationDialogColorInput
-  | OperationDialogDateTimeInput;
-
-interface OperationInputTypeStringToValueTypeMap {
-  text: string;
-  bool: boolean;
-  select: string;
-  color: string | null;
-  datetime: string;
-}
-
-type MapOperationInputTypeStringToValueType<Type> =
-  Type extends keyof OperationInputTypeStringToValueTypeMap
-    ? OperationInputTypeStringToValueTypeMap[Type]
-    : never;
-
-type MapOperationInputInfoValueType<T> = T extends OperationDialogInput
-  ? MapOperationInputTypeStringToValueType<T["type"]>
-  : T;
-
-const initValueMapperMap: {
-  [T in OperationDialogInput as T["type"]]: (
-    item: T
-  ) => MapOperationInputInfoValueType<T>;
-} = {
-  bool: (item) => item.initValue ?? false,
-  color: (item) => item.initValue ?? null,
-  datetime: (item) => {
-    if (item.initValue != null) {
-      return moment(item.initValue).format("YYYY-MM-DDTHH:mm:ss");
-    } else {
-      return "";
-    }
-  },
-  select: (item) => item.initValue ?? item.options[0].value,
-  text: (item) => item.initValue ?? "",
-};
-
-type MapOperationInputInfoValueTypeList<
-  Tuple extends readonly OperationDialogInput[]
-> = {
-  [Index in keyof Tuple]: MapOperationInputInfoValueType<Tuple[Index]>;
-} & { length: Tuple["length"] };
-
-export type OperationInputError =
-  | {
-      [index: number]: I18nText | null | undefined;
-    }
-  | null
-  | undefined;
-
-const isNoError = (error: OperationInputError): boolean => {
-  if (error == null) return true;
-  for (const key in error) {
-    if (error[key] != null) return false;
-  }
-  return true;
-};
-
-export interface OperationDialogProps<
-  TData,
-  OperationInputInfoList extends readonly OperationDialogInput[]
-> {
-  open: boolean;
-  onClose: () => void;
-  title: I18nText | (() => React.ReactNode);
-  themeColor?: PaletteColorType;
-  onProcess: (
-    inputs: MapOperationInputInfoValueTypeList<OperationInputInfoList>
-  ) => Promise<TData>;
-  inputScheme?: OperationInputInfoList;
-  inputValidator?: (
-    inputs: MapOperationInputInfoValueTypeList<OperationInputInfoList>
-  ) => OperationInputError;
-  inputPrompt?: I18nText | (() => React.ReactNode);
-  processPrompt?: () => React.ReactNode;
-  successPrompt?: (data: TData) => React.ReactNode;
-  failurePrompt?: (error: unknown) => React.ReactNode;
-  onSuccessAndClose?: (data: TData) => void;
-}
-
-const OperationDialog = <
-  TData,
-  OperationInputInfoList extends readonly OperationDialogInput[]
->(
-  props: OperationDialogProps<TData, OperationInputInfoList>
-): React.ReactElement => {
-  const inputScheme = (props.inputScheme ??
-    []) as readonly OperationDialogInput[];
-
-  const { t } = useTranslation();
-
-  type Step =
-    | { type: "input" }
-    | { type: "process" }
-    | {
-        type: "success";
-        data: TData;
-      }
-    | {
-        type: "failure";
-        data: unknown;
-      };
-  const [step, setStep] = useState<Step>({ type: "input" });
-
-  type ValueType = boolean | string | null | undefined;
-
-  const [values, setValues] = useState<ValueType[]>(
-    inputScheme.map((item) => {
-      if (item.type in initValueMapperMap) {
-        return (
-          initValueMapperMap[item.type] as (
-            i: OperationDialogInput
-          ) => ValueType
-        )(item);
-      } else {
-        throw new UiLogicError("Unknown input scheme.");
-      }
-    })
-  );
-  const [dirtyList, setDirtyList] = useState<boolean[]>(() =>
-    inputScheme.map(() => false)
-  );
-  const [inputError, setInputError] = useState<OperationInputError>();
-
-  const close = (): void => {
-    if (step.type !== "process") {
-      props.onClose();
-      if (step.type === "success" && props.onSuccessAndClose) {
-        props.onSuccessAndClose(step.data);
-      }
-    } else {
-      console.log("Attempt to close modal when processing.");
-    }
-  };
-
-  const onConfirm = (): void => {
-    setStep({ type: "process" });
-    props
-      .onProcess(
-        values.map((v, index) => {
-          if (inputScheme[index].type === "datetime" && v !== "")
-            return new Date(v as string).toISOString();
-          else return v;
-        }) as unknown as MapOperationInputInfoValueTypeList<OperationInputInfoList>
-      )
-      .then(
-        (d) => {
-          setStep({
-            type: "success",
-            data: d,
-          });
-        },
-        (e: unknown) => {
-          setStep({
-            type: "failure",
-            data: e,
-          });
-        }
-      );
-  };
-
-  let body: React.ReactNode;
-  if (step.type === "input" || step.type === "process") {
-    const process = step.type === "process";
-
-    let inputPrompt =
-      typeof props.inputPrompt === "function"
-        ? props.inputPrompt()
-        : convertI18nText(props.inputPrompt, t);
-    inputPrompt = <h6>{inputPrompt}</h6>;
-
-    const validate = (values: ValueType[]): boolean => {
-      const { inputValidator } = props;
-      if (inputValidator != null) {
-        const result = inputValidator(
-          values as unknown as MapOperationInputInfoValueTypeList<OperationInputInfoList>
-        );
-        setInputError(result);
-        return isNoError(result);
-      }
-      return true;
-    };
-
-    const updateValue = (index: number, newValue: ValueType): void => {
-      const oldValues = values;
-      const newValues = oldValues.slice();
-      newValues[index] = newValue;
-      setValues(newValues);
-      if (dirtyList[index] === false) {
-        const newDirtyList = dirtyList.slice();
-        newDirtyList[index] = true;
-        setDirtyList(newDirtyList);
-      }
-      validate(newValues);
-    };
-
-    const canProcess = isNoError(inputError);
-
-    body = (
-      <>
-        <div>
-          {inputPrompt}
-          {inputScheme.map((item, index) => {
-            const value = values[index];
-            const error: string | null =
-              dirtyList[index] && inputError != null
-                ? convertI18nText(inputError[index], t)
-                : null;
-
-            if (item.type === "text") {
-              return (
-                <div
-                  key={index}
-                  className={classNames(
-                    "cru-operation-dialog-group",
-                    error != null ? "error" : null
-                  )}
-                >
-                  {item.label && (
-                    <label className="cru-operation-dialog-label">
-                      {convertI18nText(item.label, t)}
-                    </label>
-                  )}
-                  <input
-                    type={item.password === true ? "password" : "text"}
-                    value={value as string}
-                    onChange={(e) => {
-                      const v = e.target.value;
-                      updateValue(index, v);
-                    }}
-                    disabled={process}
-                  />
-                  {error != null && (
-                    <div className="cru-operation-dialog-error-text">
-                      {error}
-                    </div>
-                  )}
-                  {item.helperText && (
-                    <div className="cru-operation-dialog-helper-text">
-                      {t(item.helperText)}
-                    </div>
-                  )}
-                </div>
-              );
-            } else if (item.type === "bool") {
-              return (
-                <div
-                  key={index}
-                  className={classNames(
-                    "cru-operation-dialog-group",
-                    error != null ? "error" : null
-                  )}
-                >
-                  <input
-                    type="checkbox"
-                    checked={value as boolean}
-                    onChange={(event) => {
-                      updateValue(index, event.currentTarget.checked);
-                    }}
-                    disabled={process}
-                  />
-                  <label className="cru-operation-dialog-inline-label">
-                    {convertI18nText(item.label, t)}
-                  </label>
-                  {error != null && (
-                    <div className="cru-operation-dialog-error-text">
-                      {error}
-                    </div>
-                  )}
-                  {item.helperText && (
-                    <div className="cru-operation-dialog-helper-text">
-                      {t(item.helperText)}
-                    </div>
-                  )}
-                </div>
-              );
-            } else if (item.type === "select") {
-              return (
-                <div
-                  key={index}
-                  className={classNames(
-                    "cru-operation-dialog-group",
-                    error != null ? "error" : null
-                  )}
-                >
-                  <label className="cru-operation-dialog-label">
-                    {convertI18nText(item.label, t)}
-                  </label>
-                  <select
-                    value={value as string}
-                    onChange={(event) => {
-                      updateValue(index, event.target.value);
-                    }}
-                    disabled={process}
-                  >
-                    {item.options.map((option, i) => {
-                      return (
-                        <option value={option.value} key={i}>
-                          {option.icon}
-                          {convertI18nText(option.label, t)}
-                        </option>
-                      );
-                    })}
-                  </select>
-                </div>
-              );
-            } else if (item.type === "color") {
-              return (
-                <div
-                  key={index}
-                  className={classNames(
-                    "cru-operation-dialog-group",
-                    error != null ? "error" : null
-                  )}
-                >
-                  {item.canBeNull ? (
-                    <input
-                      type="checkbox"
-                      checked={value !== null}
-                      onChange={(event) => {
-                        if (event.currentTarget.checked) {
-                          updateValue(index, "#007bff");
-                        } else {
-                          updateValue(index, null);
-                        }
-                      }}
-                      disabled={process}
-                    />
-                  ) : null}
-                  <label className="cru-operation-dialog-inline-label">
-                    {convertI18nText(item.label, t)}
-                  </label>
-                  {value !== null && (
-                    <TwitterPicker
-                      color={value as string}
-                      triangle="hide"
-                      onChange={(result) => updateValue(index, result.hex)}
-                    />
-                  )}
-                </div>
-              );
-            } else if (item.type === "datetime") {
-              return (
-                <div
-                  key={index}
-                  className={classNames(
-                    "cru-operation-dialog-group",
-                    error != null ? "error" : null
-                  )}
-                >
-                  {item.label && (
-                    <label className="cru-operation-dialog-label">
-                      {convertI18nText(item.label, t)}
-                    </label>
-                  )}
-                  <input
-                    type="datetime-local"
-                    value={value as string}
-                    onChange={(e) => {
-                      const v = e.target.value;
-                      updateValue(index, v);
-                    }}
-                    disabled={process}
-                  />
-                  {error != null && <div>{error}</div>}
-                </div>
-              );
-            }
-          })}
-        </div>
-        <hr />
-        <div className="cru-dialog-bottom-area">
-          <Button
-            text="operationDialog.cancel"
-            color="secondary"
-            outline
-            onClick={close}
-            disabled={process}
-          />
-          <LoadingButton
-            color={props.themeColor}
-            loading={process}
-            disabled={!canProcess}
-            onClick={() => {
-              setDirtyList(inputScheme.map(() => true));
-              if (validate(values)) {
-                onConfirm();
-              }
-            }}
-          >
-            {t("operationDialog.confirm")}
-          </LoadingButton>
-        </div>
-      </>
-    );
-  } else {
-    let content: React.ReactNode;
-    const result = step;
-    if (result.type === "success") {
-      content =
-        props.successPrompt?.(result.data) ?? t("operationDialog.success");
-      if (typeof content === "string")
-        content = <p className="cru-color-success">{content}</p>;
-    } else {
-      content = props.failurePrompt?.(result.data) ?? <DefaultErrorPrompt />;
-      if (typeof content === "string")
-        content = <DefaultErrorPrompt error={content} />;
-    }
-    body = (
-      <>
-        <div>{content}</div>
-        <hr />
-        <div className="cru-dialog-bottom-area">
-          <Button text="operationDialog.ok" color="primary" onClick={close} />
-        </div>
-      </>
-    );
-  }
-
-  const title =
-    typeof props.title === "function"
-      ? props.title()
-      : convertI18nText(props.title, t);
-
-  return (
-    <Dialog open={props.open} onClose={close}>
-      <h3
-        className={
-          props.themeColor != null
-            ? "cru-color-" + props.themeColor
-            : "cru-color-primary"
-        }
-      >
-        {title}
-      </h3>
-      <hr />
-      {body}
-    </Dialog>
-  );
-};
-
-export default OperationDialog;
diff --git a/FrontEnd/src/views/common/index.css b/FrontEnd/src/views/common/index.css
deleted file mode 100644
index 111a3ec0..00000000
--- a/FrontEnd/src/views/common/index.css
+++ /dev/null
@@ -1,293 +0,0 @@
-:root {
-  --cru-background-color: #f8f9fa;
-  --cru-background-1-color: #e9ecef;
-  --cru-background-2-color: #dee2e6;
-
-  --cru-disable-color: #ced4da;
-
-  /*
-  --cru-primary-color: rgb(0, 123, 255);
-  --cru-primary-l1-color: rgb(26, 136, 255);
-  --cru-primary-l2-color: rgb(51, 149, 255);
-  --cru-primary-l3-color: rgb(77, 163, 255);
-  --cru-primary-d1-color: rgb(0, 111, 230);
-  --cru-primary-d2-color: rgb(0, 98, 204);
-  --cru-primary-d3-color: rgb(0, 86, 179);
-  --cru-primary-f1-color: rgb(0, 111, 230);
-  --cru-primary-f2-color: rgb(0, 98, 204);
-  --cru-primary-f3-color: rgb(0, 86, 179);
-  --cru-primary-r1-color: rgb(26, 136, 255);
-  --cru-primary-r2-color: rgb(51, 149, 255);
-  --cru-primary-r3-color: rgb(77, 163, 255);
-  --cru-primary-t-color: rgb(255, 255, 255);
-  --cru-primary-t1-color: rgb(230, 230, 230);
-  --cru-primary-t2-color: rgb(204, 204, 204);
-  --cru-primary-t3-color: rgb(179, 179, 179);
-  --cru-primary-enhance-color: rgb(77, 163, 255);
-  --cru-primary-enhance-l1-color: rgb(94, 172, 255);
-  --cru-primary-enhance-l2-color: rgb(112, 181, 255);
-  --cru-primary-enhance-l3-color: rgb(130, 190, 255);
-  --cru-primary-enhance-d1-color: rgb(43, 145, 255);
-  --cru-primary-enhance-d2-color: rgb(10, 128, 255);
-  --cru-primary-enhance-d3-color: rgb(0, 112, 232);
-  --cru-primary-enhance-f1-color: rgb(94, 172, 255);
-  --cru-primary-enhance-f2-color: rgb(112, 181, 255);
-  --cru-primary-enhance-f3-color: rgb(130, 190, 255);
-  --cru-primary-enhance-r1-color: rgb(43, 145, 255);
-  --cru-primary-enhance-r2-color: rgb(10, 128, 255);
-  --cru-primary-enhance-r3-color: rgb(0, 112, 232);
-  --cru-primary-enhance-t-color: rgb(0, 0, 0);
-  --cru-primary-enhance-t1-color: rgb(26, 26, 26);
-  --cru-primary-enhance-t2-color: rgb(51, 51, 51);
-  --cru-primary-enhance-t3-color: rgb(77, 77, 77);
-  --cru-secondary-color: rgb(128, 128, 128);
-  --cru-secondary-l1-color: rgb(141, 141, 141);
-  --cru-secondary-l2-color: rgb(153, 153, 153);
-  --cru-secondary-l3-color: rgb(166, 166, 166);
-  --cru-secondary-d1-color: rgb(115, 115, 115);
-  --cru-secondary-d2-color: rgb(102, 102, 102);
-  --cru-secondary-d3-color: rgb(90, 90, 90);
-  --cru-secondary-f1-color: rgb(115, 115, 115);
-  --cru-secondary-f2-color: rgb(102, 102, 102);
-  --cru-secondary-f3-color: rgb(90, 90, 90);
-  --cru-secondary-r1-color: rgb(141, 141, 141);
-  --cru-secondary-r2-color: rgb(153, 153, 153);
-  --cru-secondary-r3-color: rgb(166, 166, 166);
-  --cru-secondary-t-color: rgb(255, 255, 255);
-  --cru-secondary-t1-color: rgb(230, 230, 230);
-  --cru-secondary-t2-color: rgb(204, 204, 204);
-  --cru-secondary-t3-color: rgb(179, 179, 179);
-  --cru-danger-color: rgb(255, 0, 0);
-  --cru-danger-l1-color: rgb(255, 26, 26);
-  --cru-danger-l2-color: rgb(255, 51, 51);
-  --cru-danger-l3-color: rgb(255, 77, 77);
-  --cru-danger-d1-color: rgb(230, 0, 0);
-  --cru-danger-d2-color: rgb(204, 0, 0);
-  --cru-danger-d3-color: rgb(179, 0, 0);
-  --cru-danger-f1-color: rgb(230, 0, 0);
-  --cru-danger-f2-color: rgb(204, 0, 0);
-  --cru-danger-f3-color: rgb(179, 0, 0);
-  --cru-danger-r1-color: rgb(255, 26, 26);
-  --cru-danger-r2-color: rgb(255, 51, 51);
-  --cru-danger-r3-color: rgb(255, 77, 77);
-  --cru-danger-t-color: rgb(255, 255, 255);
-  --cru-danger-t1-color: rgb(230, 230, 230);
-  --cru-danger-t2-color: rgb(204, 204, 204);
-  --cru-danger-t3-color: rgb(179, 179, 179);
-  --cru-success-color: rgb(0, 128, 0);
-  --cru-success-l1-color: rgb(0, 166, 0);
-  --cru-success-l2-color: rgb(0, 204, 0);
-  --cru-success-l3-color: rgb(0, 243, 0);
-  --cru-success-d1-color: rgb(0, 115, 0);
-  --cru-success-d2-color: rgb(0, 102, 0);
-  --cru-success-d3-color: rgb(0, 90, 0);
-  --cru-success-f1-color: rgb(0, 115, 0);
-  --cru-success-f2-color: rgb(0, 102, 0);
-  --cru-success-f3-color: rgb(0, 90, 0);
-  --cru-success-r1-color: rgb(0, 166, 0);
-  --cru-success-r2-color: rgb(0, 204, 0);
-  --cru-success-r3-color: rgb(0, 243, 0);
-  --cru-success-t-color: rgb(255, 255, 255);
-  --cru-success-t1-color: rgb(230, 230, 230);
-  --cru-success-t2-color: rgb(204, 204, 204);
-  --cru-success-t3-color: rgb(179, 179, 179);
-  */
-}
-
-.cru-primary {
-  --cru-theme-color: var(--cru-primary-color);
-  --cru-theme-l1-color: var(--cru-primary-l1-color);
-  --cru-theme-l2-color: var(--cru-primary-l2-color);
-  --cru-theme-l3-color: var(--cru-primary-l3-color);
-  --cru-theme-d1-color: var(--cru-primary-d1-color);
-  --cru-theme-d2-color: var(--cru-primary-d2-color);
-  --cru-theme-d3-color: var(--cru-primary-d3-color);
-  --cru-theme-f1-color: var(--cru-primary-f1-color);
-  --cru-theme-f2-color: var(--cru-primary-f2-color);
-  --cru-theme-f3-color: var(--cru-primary-f3-color);
-  --cru-theme-r1-color: var(--cru-primary-r1-color);
-  --cru-theme-r2-color: var(--cru-primary-r2-color);
-  --cru-theme-r3-color: var(--cru-primary-r3-color);
-  --cru-theme-t-color: var(--cru-primary-t-color);
-  --cru-theme-t1-color: var(--cru-primary-t1-color);
-  --cru-theme-t2-color: var(--cru-primary-t2-color);
-  --cru-theme-t3-color: var(--cru-primary-t3-color);
-}
-
-.cru-primary-enhance {
-  --cru-theme-color: var(--cru-primary-enhance-color);
-  --cru-theme-l1-color: var(--cru-primary-enhance-l1-color);
-  --cru-theme-l2-color: var(--cru-primary-enhance-l2-color);
-  --cru-theme-l3-color: var(--cru-primary-enhance-l3-color);
-  --cru-theme-d1-color: var(--cru-primary-enhance-d1-color);
-  --cru-theme-d2-color: var(--cru-primary-enhance-d2-color);
-  --cru-theme-d3-color: var(--cru-primary-enhance-d3-color);
-  --cru-theme-f1-color: var(--cru-primary-enhance-f1-color);
-  --cru-theme-f2-color: var(--cru-primary-enhance-f2-color);
-  --cru-theme-f3-color: var(--cru-primary-enhance-f3-color);
-  --cru-theme-r1-color: var(--cru-primary-enhance-r1-color);
-  --cru-theme-r2-color: var(--cru-primary-enhance-r2-color);
-  --cru-theme-r3-color: var(--cru-primary-enhance-r3-color);
-  --cru-theme-t-color: var(--cru-primary-enhance-t-color);
-  --cru-theme-t1-color: var(--cru-primary-enhance-t1-color);
-  --cru-theme-t2-color: var(--cru-primary-enhance-t2-color);
-  --cru-theme-t3-color: var(--cru-primary-enhance-t3-color);
-}
-
-.cru-secondary {
-  --cru-theme-color: var(--cru-secondary-color);
-  --cru-theme-l1-color: var(--cru-secondary-l1-color);
-  --cru-theme-l2-color: var(--cru-secondary-l2-color);
-  --cru-theme-l3-color: var(--cru-secondary-l3-color);
-  --cru-theme-d1-color: var(--cru-secondary-d1-color);
-  --cru-theme-d2-color: var(--cru-secondary-d2-color);
-  --cru-theme-d3-color: var(--cru-secondary-d3-color);
-  --cru-theme-f1-color: var(--cru-secondary-f1-color);
-  --cru-theme-f2-color: var(--cru-secondary-f2-color);
-  --cru-theme-f3-color: var(--cru-secondary-f3-color);
-  --cru-theme-r1-color: var(--cru-secondary-r1-color);
-  --cru-theme-r2-color: var(--cru-secondary-r2-color);
-  --cru-theme-r3-color: var(--cru-secondary-r3-color);
-  --cru-theme-t-color: var(--cru-secondary-t-color);
-  --cru-theme-t1-color: var(--cru-secondary-t1-color);
-  --cru-theme-t2-color: var(--cru-secondary-t2-color);
-  --cru-theme-t3-color: var(--cru-secondary-t3-color);
-}
-
-.cru-success {
-  --cru-theme-color: var(--cru-success-color);
-  --cru-theme-l1-color: var(--cru-success-l1-color);
-  --cru-theme-l2-color: var(--cru-success-l2-color);
-  --cru-theme-l3-color: var(--cru-success-l3-color);
-  --cru-theme-d1-color: var(--cru-success-d1-color);
-  --cru-theme-d2-color: var(--cru-success-d2-color);
-  --cru-theme-d3-color: var(--cru-success-d3-color);
-  --cru-theme-f1-color: var(--cru-success-f1-color);
-  --cru-theme-f2-color: var(--cru-success-f2-color);
-  --cru-theme-f3-color: var(--cru-success-f3-color);
-  --cru-theme-r1-color: var(--cru-success-r1-color);
-  --cru-theme-r2-color: var(--cru-success-r2-color);
-  --cru-theme-r3-color: var(--cru-success-r3-color);
-  --cru-theme-t-color: var(--cru-success-t-color);
-  --cru-theme-t1-color: var(--cru-success-t1-color);
-  --cru-theme-t2-color: var(--cru-success-t2-color);
-  --cru-theme-t3-color: var(--cru-success-t3-color);
-}
-
-.cru-danger {
-  --cru-theme-color: var(--cru-danger-color);
-  --cru-theme-l1-color: var(--cru-danger-l1-color);
-  --cru-theme-l2-color: var(--cru-danger-l2-color);
-  --cru-theme-l3-color: var(--cru-danger-l3-color);
-  --cru-theme-d1-color: var(--cru-danger-d1-color);
-  --cru-theme-d2-color: var(--cru-danger-d2-color);
-  --cru-theme-d3-color: var(--cru-danger-d3-color);
-  --cru-theme-f1-color: var(--cru-danger-f1-color);
-  --cru-theme-f2-color: var(--cru-danger-f2-color);
-  --cru-theme-f3-color: var(--cru-danger-f3-color);
-  --cru-theme-r1-color: var(--cru-danger-r1-color);
-  --cru-theme-r2-color: var(--cru-danger-r2-color);
-  --cru-theme-r3-color: var(--cru-danger-r3-color);
-  --cru-theme-t-color: var(--cru-danger-t-color);
-  --cru-theme-t1-color: var(--cru-danger-t1-color);
-  --cru-theme-t2-color: var(--cru-danger-t2-color);
-  --cru-theme-t3-color: var(--cru-danger-t3-color);
-}
-
-.cru-color-primary {
-  color: var(--cru-primary-color);
-}
-
-.cru-color-primary-enhance {
-  color: var(--cru-primary-enhance-color);
-}
-
-.cru-color-secondary {
-  color: var(--cru-secondary-color);
-}
-
-.cru-color-success {
-  color: var(--cru-success-color);
-}
-
-.cru-color-danger {
-  color: var(--cru-danger-color);
-}
-
-.cru-text-center {
-  text-align: center;
-}
-
-.cru-text-end {
-  text-align: end;
-}
-
-.cru-float-left {
-  float: left;
-}
-
-.cru-float-right {
-  float: right;
-}
-
-.cru-align-text-bottom {
-  vertical-align: text-bottom;
-}
-
-.cru-align-middle {
-  vertical-align: middle;
-}
-
-.cru-clearfix::after {
-  clear: both;
-}
-
-.cru-fill-parent {
-  width: 100%;
-  height: 100%;
-}
-
-.cru-avatar {
-  width: 60px;
-  height: 60px;
-}
-
-.cru-avatar.large {
-  width: 100px;
-  height: 100px;
-}
-
-.cru-avatar.small {
-  width: 40px;
-  height: 40px;
-}
-
-.cru-round {
-  border-radius: 50%;
-}
-
-.cru-tab-pages-action-area {
-  display: flex;
-  align-items: center;
-}
-
-.alert-container {
-  position: fixed;
-  z-index: 1070;
-}
-
-@media (min-width: 576px) {
-  .alert-container {
-    bottom: 0;
-    right: 0;
-  }
-}
-
-@media (max-width: 575.98px) {
-  .alert-container {
-    bottom: 0;
-    right: 0;
-    left: 0;
-    text-align: center;
-  }
-}
-\ No newline at end of file
diff --git a/FrontEnd/src/views/common/input/InputPanel.css b/FrontEnd/src/views/common/input/InputPanel.css
deleted file mode 100644
index f9d6ac8b..00000000
--- a/FrontEnd/src/views/common/input/InputPanel.css
+++ /dev/null
@@ -1,25 +0,0 @@
-.cru-input-panel-group {
-  display: block;
-  margin: 0.4em 0;
-}
-
-.cru-input-panel-label {
-  display: block;
-  color: var(--cru-primary-color);
-}
-
-.cru-input-panel-inline-label {
-  margin-inline-start: 0.5em;
-}
-
-.cru-input-panel-error-text {
-  display: block;
-  font-size: 0.8em;
-  color: var(--cru-danger-color);
-}
-
-.cru-input-panel-helper-text {
-  display: block;
-  font-size: 0.8em;
-  color: var(--cru-primary-color);
-}
diff --git a/FrontEnd/src/views/common/input/InputPanel.tsx b/FrontEnd/src/views/common/input/InputPanel.tsx
deleted file mode 100644
index 234ed267..00000000
--- a/FrontEnd/src/views/common/input/InputPanel.tsx
+++ /dev/null
@@ -1,257 +0,0 @@
-import * as React from "react";
-import classNames from "classnames";
-import { useTranslation } from "react-i18next";
-import { TwitterPicker } from "react-color";
-
-import { convertI18nText, I18nText } from "@/common";
-
-import "./InputPanel.css";
-
-export interface TextInput {
-  type: "text";
-  label?: I18nText;
-  helper?: I18nText;
-  password?: boolean;
-}
-
-export interface BoolInput {
-  type: "bool";
-  label: I18nText;
-  helper?: I18nText;
-}
-
-export interface SelectInputOption {
-  value: string;
-  label: I18nText;
-  icon?: React.ReactElement;
-}
-
-export interface SelectInput {
-  type: "select";
-  label: I18nText;
-  options: SelectInputOption[];
-}
-
-export interface ColorInput {
-  type: "color";
-  label?: I18nText;
-}
-
-export interface DateTimeInput {
-  type: "datetime";
-  label?: I18nText;
-  helper?: I18nText;
-}
-
-export type Input =
-  | TextInput
-  | BoolInput
-  | SelectInput
-  | ColorInput
-  | DateTimeInput;
-
-interface InputTypeToValueTypeMap {
-  text: string;
-  bool: boolean;
-  select: string;
-  color: string;
-  datetime: string;
-}
-
-type ValueTypes = InputTypeToValueTypeMap[keyof InputTypeToValueTypeMap];
-
-type MapInputTypeToValueType<Type> = Type extends keyof InputTypeToValueTypeMap
-  ? InputTypeToValueTypeMap[Type]
-  : never;
-
-type MapInputToValueType<T> = T extends Input
-  ? MapInputTypeToValueType<T["type"]>
-  : T;
-
-type MapInputListToValueTypeList<Tuple extends readonly Input[]> = {
-  [Index in keyof Tuple]: MapInputToValueType<Tuple[Index]>;
-} & { length: Tuple["length"] };
-
-export type InputPanelError = {
-  [index: number]: I18nText | null | undefined;
-};
-
-export function hasError(e: InputPanelError | null | undefined): boolean {
-  if (e == null) return false;
-  for (const key of Object.keys(e)) {
-    if (e[key as unknown as number] != null) return true;
-  }
-  return false;
-}
-
-export interface InputPanelProps<InputList extends readonly Input[]> {
-  scheme: InputList;
-  values: MapInputListToValueTypeList<InputList>;
-  onChange: (
-    values: MapInputListToValueTypeList<InputList>,
-    index: number
-  ) => void;
-  error?: InputPanelError;
-  disable?: boolean;
-}
-
-const InputPanel = <InputList extends readonly Input[]>(
-  props: InputPanelProps<InputList>
-): React.ReactElement => {
-  const { values, onChange, scheme, error, disable } = props;
-
-  const { t } = useTranslation();
-
-  const updateValue = (index: number, newValue: ValueTypes): void => {
-    const oldValues = values;
-    const newValues = oldValues.slice();
-    newValues[index] = newValue;
-    onChange(
-      newValues as unknown as MapInputListToValueTypeList<InputList>,
-      index
-    );
-  };
-
-  return (
-    <div>
-      {scheme.map((item, index) => {
-        const v = values[index];
-        const e: string | null = convertI18nText(error?.[index], t);
-
-        if (item.type === "text") {
-          return (
-            <div
-              key={index}
-              className={classNames("cru-input-panel-group", e && "error")}
-            >
-              {item.label && (
-                <label className="cru-input-panel-label">
-                  {convertI18nText(item.label, t)}
-                </label>
-              )}
-              <input
-                type={item.password === true ? "password" : "text"}
-                value={v as string}
-                onChange={(e) => {
-                  const v = e.target.value;
-                  updateValue(index, v);
-                }}
-                disabled={disable}
-              />
-              {e && <div className="cru-input-panel-error-text">{e}</div>}
-              {item.helper && (
-                <div className="cru-input-panel-helper-text">
-                  {convertI18nText(item.helper, t)}
-                </div>
-              )}
-            </div>
-          );
-        } else if (item.type === "bool") {
-          return (
-            <div
-              key={index}
-              className={classNames("cru-input-panel-group", e && "error")}
-            >
-              <input
-                type="checkbox"
-                checked={v as boolean}
-                onChange={(event) => {
-                  const value = event.currentTarget.checked;
-                  updateValue(index, value);
-                }}
-                disabled={disable}
-              />
-              <label className="cru-input-panel-inline-label">
-                {convertI18nText(item.label, t)}
-              </label>
-              {e != null && (
-                <div className="cru-input-panel-error-text">{e}</div>
-              )}
-              {item.helper && (
-                <div className="cru-input-panel-helper-text">
-                  {convertI18nText(item.helper, t)}
-                </div>
-              )}
-            </div>
-          );
-        } else if (item.type === "select") {
-          return (
-            <div
-              key={index}
-              className={classNames("cru-input-panel-group", e && "error")}
-            >
-              <label className="cru-input-panel-label">
-                {convertI18nText(item.label, t)}
-              </label>
-              <select
-                value={v as string}
-                onChange={(event) => {
-                  const value = event.target.value;
-                  updateValue(index, value);
-                }}
-                disabled={disable}
-              >
-                {item.options.map((option, i) => {
-                  return (
-                    <option value={option.value} key={i}>
-                      {option.icon}
-                      {convertI18nText(option.label, t)}
-                    </option>
-                  );
-                })}
-              </select>
-            </div>
-          );
-        } else if (item.type === "color") {
-          return (
-            <div
-              key={index}
-              className={classNames("cru-input-panel-group", e && "error")}
-            >
-              <label className="cru-input-panel-inline-label">
-                {convertI18nText(item.label, t)}
-              </label>
-              <TwitterPicker
-                color={v as string}
-                triangle="hide"
-                onChange={(result) => updateValue(index, result.hex)}
-              />
-            </div>
-          );
-        } else if (item.type === "datetime") {
-          return (
-            <div
-              key={index}
-              className={classNames("cru-input-panel-group", e && "error")}
-            >
-              {item.label && (
-                <label className="cru-input-panel-label">
-                  {convertI18nText(item.label, t)}
-                </label>
-              )}
-              <input
-                type="datetime-local"
-                value={v as string}
-                onChange={(e) => {
-                  const v = e.target.value;
-                  updateValue(index, v);
-                }}
-                disabled={disable}
-              />
-              {e != null && (
-                <div className="cru-input-panel-error-text">{e}</div>
-              )}
-              {item.helper && (
-                <div className="cru-input-panel-helper-text">
-                  {convertI18nText(item.helper, t)}
-                </div>
-              )}
-            </div>
-          );
-        }
-      })}
-    </div>
-  );
-};
-
-export default InputPanel;
diff --git a/FrontEnd/src/views/common/menu/Menu.css b/FrontEnd/src/views/common/menu/Menu.css
deleted file mode 100644
index c3fa82c4..00000000
--- a/FrontEnd/src/views/common/menu/Menu.css
+++ /dev/null
@@ -1,24 +0,0 @@
-.cru-menu {
-  min-width: 200px;
-}
-
-.cru-menu-item {
-  font-size: 1em;
-  padding: 0.5em 1.5em;
-  cursor: pointer;
-  transition: all 0.5s;
-  color: var(--cru-theme-color);
-}
-
-.cru-menu-item:hover {
-  color: var(--cru-theme-t-color);
-  background-color: var(--cru-theme-color);
-}
-
-.cru-menu-item-icon {
-  margin-right: 1em;
-}
-
-.cru-menu-divider {
-  border-top: 1px solid #e9ecef;
-}
diff --git a/FrontEnd/src/views/common/menu/Menu.tsx b/FrontEnd/src/views/common/menu/Menu.tsx
deleted file mode 100644
index de3b1664..00000000
--- a/FrontEnd/src/views/common/menu/Menu.tsx
+++ /dev/null
@@ -1,72 +0,0 @@
-import * as React from "react";
-import classnames from "classnames";
-import { useTranslation } from "react-i18next";
-
-import { convertI18nText, I18nText } from "@/common";
-import { PaletteColorType } from "@/palette";
-
-import "./Menu.css";
-
-export type MenuItem =
-  | {
-      type: "divider";
-    }
-  | {
-      type: "button";
-      text: I18nText;
-      iconClassName?: string;
-      color?: PaletteColorType;
-      onClick: () => void;
-    };
-
-export type MenuItems = MenuItem[];
-
-export type MenuProps = {
-  items: MenuItems;
-  onItemClicked?: () => void;
-  className?: string;
-  style?: React.CSSProperties;
-};
-
-export default function _Menu({
-  items,
-  onItemClicked,
-  className,
-  style,
-}: MenuProps): React.ReactElement | null {
-  const { t } = useTranslation();
-
-  return (
-    <div className={classnames("cru-menu", className)} style={style}>
-      {items.map((item, index) => {
-        if (item.type === "divider") {
-          return <div key={index} className="cru-menu-divider" />;
-        } else {
-          return (
-            <div
-              key={index}
-              className={classnames(
-                "cru-menu-item",
-                `cru-${item.color ?? "primary"}`
-              )}
-              onClick={() => {
-                item.onClick();
-                onItemClicked?.();
-              }}
-            >
-              {item.iconClassName != null ? (
-                <i
-                  className={classnames(
-                    item.iconClassName,
-                    "cru-menu-item-icon"
-                  )}
-                />
-              ) : null}
-              {convertI18nText(item.text, t)}
-            </div>
-          );
-        }
-      })}
-    </div>
-  );
-}
diff --git a/FrontEnd/src/views/common/menu/PopupMenu.css b/FrontEnd/src/views/common/menu/PopupMenu.css
deleted file mode 100644
index f6654f68..00000000
--- a/FrontEnd/src/views/common/menu/PopupMenu.css
+++ /dev/null
@@ -1,6 +0,0 @@
-.cru-popup-menu-menu-container {
-  z-index: 1040;
-  border-radius: 5px;
-  border: var(--cru-primary-color) 1px solid;
-  background-color: white;
-}
diff --git a/FrontEnd/src/views/common/menu/PopupMenu.tsx b/FrontEnd/src/views/common/menu/PopupMenu.tsx
deleted file mode 100644
index 74ca7aba..00000000
--- a/FrontEnd/src/views/common/menu/PopupMenu.tsx
+++ /dev/null
@@ -1,71 +0,0 @@
-import classNames from "classnames";
-import * as React from "react";
-import { createPortal } from "react-dom";
-import { usePopper } from "react-popper";
-
-import { useClickOutside } from "@/utilities/hooks";
-
-import Menu, { MenuItems } from "./Menu";
-
-import "./PopupMenu.css";
-
-export interface PopupMenuProps {
-  items: MenuItems;
-  children?: React.ReactNode;
-  containerClassName?: string;
-  containerStyle?: React.CSSProperties;
-}
-
-const PopupMenu: React.FC<PopupMenuProps> = ({
-  items,
-  children,
-  containerClassName,
-  containerStyle,
-}) => {
-  const [show, setShow] = React.useState<boolean>(false);
-
-  const [referenceElement, setReferenceElement] =
-    React.useState<HTMLDivElement | null>(null);
-  const [popperElement, setPopperElement] =
-    React.useState<HTMLDivElement | null>(null);
-  const { styles, attributes } = usePopper(referenceElement, popperElement);
-
-  useClickOutside(popperElement, () => setShow(false), true);
-
-  return (
-    <>
-      <div
-        ref={setReferenceElement}
-        className={classNames(
-          "cru-popup-menu-trigger-container",
-          containerClassName
-        )}
-        style={containerStyle}
-        onClick={() => setShow(true)}
-      >
-        {children}
-      </div>
-      {show
-        ? createPortal(
-            <div
-              ref={setPopperElement}
-              className="cru-popup-menu-menu-container"
-              style={styles.popper}
-              {...attributes.popper}
-            >
-              <Menu
-                items={items}
-                onItemClicked={() => {
-                  setShow(false);
-                }}
-              />
-            </div>,
-            // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
-            document.getElementById("portal")!
-          )
-        : null}
-    </>
-  );
-};
-
-export default PopupMenu;
diff --git a/FrontEnd/src/views/common/tab/TabPages.tsx b/FrontEnd/src/views/common/tab/TabPages.tsx
deleted file mode 100644
index cdb988e0..00000000
--- a/FrontEnd/src/views/common/tab/TabPages.tsx
+++ /dev/null
@@ -1,71 +0,0 @@
-import * as React from "react";
-
-import { I18nText, UiLogicError } from "@/common";
-
-import Tabs from "./Tabs";
-
-export interface TabPage {
-  name: string;
-  text: I18nText;
-  page: React.ReactNode;
-}
-
-export interface TabPagesProps {
-  pages: TabPage[];
-  actions?: React.ReactNode;
-  dense?: boolean;
-  className?: string;
-  style?: React.CSSProperties;
-  navClassName?: string;
-  navStyle?: React.CSSProperties;
-  pageContainerClassName?: string;
-  pageContainerStyle?: React.CSSProperties;
-}
-
-const TabPages: React.FC<TabPagesProps> = ({
-  pages,
-  actions,
-  dense,
-  className,
-  style,
-  navClassName,
-  navStyle,
-  pageContainerClassName,
-  pageContainerStyle,
-}) => {
-  if (pages.length === 0) {
-    throw new UiLogicError("Page list can't be empty.");
-  }
-
-  const [tab, setTab] = React.useState<string>(pages[0].name);
-
-  const currentPage = pages.find((p) => p.name === tab);
-
-  if (currentPage == null) {
-    throw new UiLogicError("Current tab value is bad.");
-  }
-
-  return (
-    <div className={className} style={style}>
-      <Tabs
-        tabs={pages.map((page) => ({
-          name: page.name,
-          text: page.text,
-          onClick: () => {
-            setTab(page.name);
-          },
-        }))}
-        dense={dense}
-        activeTabName={tab}
-        className={navClassName}
-        style={navStyle}
-        actions={actions}
-      />
-      <div className={pageContainerClassName} style={pageContainerStyle}>
-        {currentPage.page}
-      </div>
-    </div>
-  );
-};
-
-export default TabPages;
diff --git a/FrontEnd/src/views/common/tab/Tabs.css b/FrontEnd/src/views/common/tab/Tabs.css
deleted file mode 100644
index 395d16a7..00000000
--- a/FrontEnd/src/views/common/tab/Tabs.css
+++ /dev/null
@@ -1,33 +0,0 @@
-.cru-nav {
-  border-bottom: var(--cru-primary-color) 1px solid;
-  display: flex;
-}
-
-.cru-nav-item {
-  color: var(--cru-primary-color);
-  border: var(--cru-background-2-color) 0.5px solid;
-  border-bottom: none;
-  padding: 0.5em 1.5em;
-  border-top-left-radius: 5px;
-  border-top-right-radius: 5px;
-  transition: all 0.5s;
-  cursor: pointer;
-}
-
-.cru-nav.dense .cru-nav-item {
-  padding: 0.2em 1em;
-}
-
-.cru-nav-item:hover {
-  background-color: var(--cru-background-1-color);
-}
-
-.cru-nav-item.active {
-  color: var(--cru-primary-t-color);
-  background-color: var(--cru-primary-color);
-  border-color: var(--cru-primary-color);
-}
-
-.cru-nav-action-area {
-  margin-left: auto;
-}
diff --git a/FrontEnd/src/views/common/tab/Tabs.tsx b/FrontEnd/src/views/common/tab/Tabs.tsx
deleted file mode 100644
index 3e3ef6fa..00000000
--- a/FrontEnd/src/views/common/tab/Tabs.tsx
+++ /dev/null
@@ -1,62 +0,0 @@
-import * as React from "react";
-import { Link } from "react-router-dom";
-import { useTranslation } from "react-i18next";
-import classnames from "classnames";
-
-import { convertI18nText, I18nText } from "@/common";
-
-import "./Tabs.css";
-
-export interface Tab {
-  name: string;
-  text: I18nText;
-  link?: string;
-  onClick?: () => void;
-}
-
-export interface TabsProps {
-  activeTabName?: string;
-  actions?: React.ReactNode;
-  dense?: boolean;
-  tabs: Tab[];
-  className?: string;
-  style?: React.CSSProperties;
-}
-
-export default function Tabs(props: TabsProps): React.ReactElement | null {
-  const { tabs, activeTabName, className, style, dense, actions } = props;
-
-  const { t } = useTranslation();
-
-  return (
-    <div
-      className={classnames("cru-nav", dense && "dense", className)}
-      style={style}
-    >
-      {tabs.map((tab) => {
-        const active = activeTabName === tab.name;
-        const className = classnames("cru-nav-item", active && "active");
-
-        if (tab.link != null) {
-          return (
-            <Link
-              key={tab.name}
-              to={tab.link}
-              onClick={tab.onClick}
-              className={className}
-            >
-              {convertI18nText(tab.text, t)}
-            </Link>
-          );
-        } else {
-          return (
-            <span key={tab.name} onClick={tab.onClick} className={className}>
-              {convertI18nText(tab.text, t)}
-            </span>
-          );
-        }
-      })}
-      <div className="cru-nav-action-area">{actions}</div>
-    </div>
-  );
-}
diff --git a/FrontEnd/src/views/common/user/UserAvatar.tsx b/FrontEnd/src/views/common/user/UserAvatar.tsx
deleted file mode 100644
index fcff8c69..00000000
--- a/FrontEnd/src/views/common/user/UserAvatar.tsx
+++ /dev/null
@@ -1,19 +0,0 @@
-import * as React from "react";
-
-import { getHttpUserClient } from "@/http/user";
-
-export interface UserAvatarProps
-  extends React.ImgHTMLAttributes<HTMLImageElement> {
-  username: string;
-}
-
-const UserAvatar: React.FC<UserAvatarProps> = ({ username, ...otherProps }) => {
-  return (
-    <img
-      src={getHttpUserClient().generateAvatarUrl(username)}
-      {...otherProps}
-    />
-  );
-};
-
-export default UserAvatar;