added an option for tiktok h265 videos, majorly cleaned up frontend

- cleaned up cobalt.js (by a lot)
- removed notification dot
- removed settings migration
- removed vimeoDash
- turned youtube track language switcher into a toggle
- added clarification as to what youtube dub does
- updated defaults to match with backend
- now matching a url from any string at any place

src/modules/processing/match.js

@@ -88,7 +88,8 @@ export default async function(host, patternMatch, url, lang, obj) {
                     postId: patternMatch.postId,
                     id: patternMatch.id,
                     fullAudio: obj.isTTFullAudio,
-                    isAudioOnly: isAudioOnly
+                    isAudioOnly: isAudioOnly,
+                    h265: obj.tiktokH265
                 });
                 break;
             case "tumblr":
@@ -103,8 +104,7 @@ export default async function(host, patternMatch, url, lang, obj) {
                     id: patternMatch.id.slice(0, 11),
                     password: patternMatch.password,
                     quality: obj.vQuality,
-                    isAudioOnly: isAudioOnly,
-                    forceDash: isAudioOnly ? true : obj.vimeoDash
+                    isAudioOnly: isAudioOnly
                 });
                 break;
             case "soundcloud":