Massive Dump: Single-player Tinkering now works.

Bodies have fire-rate values now, parts drop 5% more frequently, and stock weapons drop much more rarely.  EVERYTHING public.  Many new textures.  Tinkering accessible by interacting with Tinker Table in Safehouse.  Only mousedriven, sorry.  Improvements to the Button, allowing disabling and hiding.  Also, fixed a hidden bug wherein WeaponCustomizable had zero firerate, leading to DivByZero error.  This might be the very last commit, guys.