A pretty big update with an entirely reworked ability kit system.

Changelog
+ Mobs now glow at the one-minute warning mark to help track down mobs that are hiding
+ Added experience bottles to the shop

* Overhauled ability kit functioning from consuming experience to having abilities referencing experience
* Readjusted giant kit and ability kits prices
* Reorganized in-game shop GUI to sort items by price and separate certain types of items, essentially making them guaranteed
* Changed lore of items and menus to reflect ability kit changes
* Doubled experience drop from monsters
* Changed color of kit indicator on the scoreboard
* Fixed issue where wolves were not protected under invisibility