MouseHunt Dark Mode

Adds a simple but comfortable dark mode for MouseHunt's browser version without compromising on the original art style.

v0.1.47 adds more dark mode to:
- Scoreboard
- Marketplace
- Item/Mice Modal
- Trap, charm, bait selector page
- Profile Pages
- Treasure Map Modal
- Shops
- Other smaller miscellaneous changes

Changed versioning from 0.0.4.7 to 0.1.47