Fixed moonball being buyable when spawn on floor convar is on

Added ttt_joke_weapons_moonball_spawn_on_floor convar

Fixed lua error when dying with the backwards shotgun

Removed warning for uninstalled mods to allow for only some of the joke weapons to be used

Added 2 hooks:
TTTBackwardsShotgunFlip
TTTBackwardsShotgunPrimary

Added a new joke weapon: Oscar the carryable cat!

Added compatibility with jester-like roles
Added full compatibility with internal and external jester roles from Custom Roles for TTT

Added the spray can as a new joke weapon!

Fixed a lua error with the laser pointer

At long last... The long revolver now has a proper worldmodel. No more clipping through the ground! (Thanks Fyxen!)