Buffed and nerfed a few characters.

Changed how the vent reset system works a bit.

The custom challenge system will now save the actual character that's on, not the slot itself, which means from now on any custom challenge made in this and any other future versions will work with any future version. With that being said, due to the new system, every old custom challenge will simply be not working as intended.

The doors no longer make noise when Cupcake, Toy Cupcake and Nightmare Cupcake are blocking them.