More bug fixes

- BPM and go go time change even when there are no notes after the change, seen in Ego Ego Atakushi and UFO Swingin'
- Maker URL can be added to a local tja
  - Example: `MAKER: Creator name <https://example.com/path>`
- Long list of settings scrolls more naturally with arrow keys
- When media engagement is low, gamepad users will not be able to proceed on the title screen until a mouse click or a key press unpauses the audio context
- Fix "Bad" note gauge judgement on easy difficulty
- In debug, use hash to tell apart songs

public/src/js/importsongs.js

@@ -232,7 +232,25 @@
 					songObj.song_skin = this.getSkin(dir, meta.taikowebskin)
 				}
 				if(meta.maker){
-				    songObj.maker = {name: meta.maker, id: 1}
+					var maker = meta.maker
+					var url = null
+					var gt = maker.lastIndexOf(">")
+					if(gt === maker.length - 1){
+						var lt = maker.lastIndexOf("<")
+						if(lt !== -1 && lt !== gt - 2){
+							url = maker.slice(lt + 2, gt)
+							if(url.startsWith("http://") || url.startsWith("https://")){
+								maker = maker.slice(0, lt).trim()
+							}else{
+								url = null
+							}
+						}
+					}
+					songObj.maker = {
+						name: maker,
+						url: url,
+						id: 1
+					}
 				}
 				for(var id in allStrings){
 					var songTitle = songObj.title