Undid storing categories in strings.js, instead using the localization method in songselect.js. category info gets passed down to view.js.

Moved categories to its own object instead of allstrings and adjusted code in the other files in order to maintain multilangual support

Fix crash when using non-localhost redis

Add custom Don

- Registered users can customise the colour of their Don and it will appear for other players
- Bug fixes:
  - Add lyrics checkbox to admin page
  - 2P shows above "creative" or "with lyrics" labels
  - Prevent accidental alt and menu keyboard presses from triggering browser menus
  - Fixed mouse hitboxes on difficulty selection
  - Clean cached sounds and lyrics when another song is loading
  - Fixed debug jumping to the top-left of the screen when hidden
  - Fixed server volume not being applied to songs

- Use inline "#LYRIC" lines in tja files
- "LYRICS:" in tja metadata can point to a vtt file, this overrides "#LYRIC"

- Place these in your .git/hooks/ directory