If multiple videos exist in one URL, a playlist will be auto generated

Removed tomp3 and tomp4 routes, replaced with /downloadFile

Simplified category->playlist conversion

Simplified playlist creation

Simplified file deletion

Playlist duration calculation is now done on the backend (categories uses this now too)

removeIDFromArchive moved from subscriptions->utils

Added plumbing to support type agnostic playlists

src/app/components/custom-playlists/custom-playlists.component.ts

@@ -53,14 +53,12 @@ export class CustomPlaylistsComponent implements OnInit {
   goToPlaylist(info_obj) {
     const playlist = info_obj.file;
     const playlistID = playlist.id;
-    const type = playlist.type;
 
     if (playlist) {
       if (this.postsService.config['Extra']['download_only_mode']) {
         this.downloadPlaylist(playlist.id, playlist.name);
       } else {
         localStorage.setItem('player_navigator', this.router.url);
-        const fileNames = playlist.fileNames;
         this.router.navigate(['/player', {playlist_id: playlistID, auto: playlist.auto}]);
       }
     } else {