Bug fixes

- Fix chart in Ai want U
- Mute music on song select with Q
- Do not scroll song select background when the tab is not active
- Fix very short inputs not being recognized
- Fix sound being muted when playing the same song again
- Fix multiplayer when audio latency is set
- Fix getting stuck when imported song cannot be restarted
- Fix 2P cursor when ura is selected by both players
- Add KeyboardEvent.key to browser tests
- Separate buttons like Shift+Left into two on the How to Play page
- Change focused button on the custom songs screen to the first one available
- Add favicon to the admin page
- Display the id on the admin new song page

templates/admin_song_detail.html

@@ -1,6 +1,6 @@
 {% extends 'admin.html' %}
 {% block content %}
-{% if song.title_lang.en %}
+{% if song.title_lang.en and song.title_lang.en != song.title %}
     <h1>{{ song.title_lang.en }} <small>({{ song.title }})</small> <small class="song-id">(ID: {{ song.id }})</small></h1>
 {% else %}
     <h1>{{ song.title }} <small class="song-id">(ID: {{ song.id }})</small></h1>