start back button, other random fixes

src/lib/stores.js

@@ -12,18 +12,6 @@ if (browser) {
 	favoritedStreams.subscribe((val) => {
 		localStorage.setItem('favoritedStreams', JSON.stringify(Array.from(val)));
 	});
-
-	if ('mediaSession' in navigator) {
-		currentSongIndex.subscribe((val) => {
-			if (val != null) {
-				const song = get(currentStream).tracks[val];
-				navigator.mediaSession.metadata = new MediaMetadata({
-					artist: song[1],
-					title: song[2]
-				});
-			}
-		});
-	}
 }
 
 export const tagList = [