feat: add file preview modal (#945)

app/assets/javascripts/components/Icon.tsx

@@ -27,9 +27,8 @@ import {
   EmailIcon,
   EyeIcon,
   EyeOffIcon,
-  FileIcon,
-  FolderIcon,
   FileDocIcon,
+  FileIcon,
   FileImageIcon,
   FileMovIcon,
   FileMusicIcon,
@@ -38,6 +37,7 @@ import {
   FilePptIcon,
   FileXlsIcon,
   FileZipIcon,
+  FolderIcon,
   HashtagIcon,
   HashtagOffIcon,
   HelpIcon,
@@ -165,7 +165,6 @@ export const ICONS = {
   settings: SettingsIcon,
   signIn: SignInIcon,
   signOut: SignOutIcon,
-  spellcheck: NotesIcon,
   spreadsheets: SpreadsheetsIcon,
   star: StarIcon,
   sync: SyncIcon,