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