Fixed missing $bottommaterial material causing massive FPS loss
It was trying to load the material every frame while underwater.
Also fix potential NPE crash with water textures/materials.
Also clear missing material list on map load, in case the material list changed (new addons,new map embedded files, etc)
Added mp_weaponrespawn
Moved some functionality tied to mp_weaponstay in recent change to a new convar.
This is meant to affect HL2DM maps
Added `Ignore Solid` for point_spotlight in FGD
Updated TTT
Fixed unintentional global variable
Updated localization files
Fixed a crash in trace code that could happen after a changelevel