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/services/tiktok.js

@@ -47,8 +47,8 @@ export default async function(obj) {
     images = detail.image_post_info?.images;
 
     let playAddr = detail.video.play_addr_h264;
-
-    if (!playAddr) playAddr = detail.video.play_addr;
+    if ((obj.h265 || !playAddr) && detail.video.play_addr)
+        playAddr = detail.video.play_addr;
 
     if (!obj.isAudioOnly && !images) {
         video = playAddr.url_list[0];

src/modules/processing/services/vimeo.js

@@ -39,7 +39,7 @@ export default async function(obj) {
     if (!api) return { error: 'ErrorCouldntFetch' };
 
     let downloadType = "dash";
-    if (!obj.forceDash && JSON.stringify(api).includes('"progressive":[{')) downloadType = "progressive";
+    if (!obj.isAudioOnly && JSON.stringify(api).includes('"progressive":[{')) downloadType = "progressive";
 
     let fileMetadata = {
         title: cleanString(api.video.title.trim()),