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/gamerules.js

@@ -44,7 +44,7 @@ class GameRules{
 			case "easy":
 				good = Math.floor(10000 / combo * 1.575)
 				ok = Math.floor(good * 0.75)
-				bad = Math.ceil(good * -2)
+				bad = Math.ceil(good / -2)
 				break
 			case "normal":
 				good = Math.floor(10000 / combo / 0.7)