Added gold player and ice player materials from TF2
Added eye track STool
Added decal paints from Half-Life2, Team Fortress 2, Counter-Strike: Source, and Left 4 Dead 2 (including blood decals from TF2 and L4D2)

Removed debug code

- Added locked property that disables physgun and tool interactions
- Added lock/unlock property to doors
- Added mount/dismount gun property to the buggy and hoverboat
- Added enable/disable radar property to the jalopy
- Added make friendly/hostile property to floor turrets
- Added deplete/restore ammo property to floor turrets
- Added self-destruct property to floor turrets, rollermines, and helicopters
- Added recharge property to health chargers and suit chargers
- Added draw viewmodel toggle to user sandbox settings
- Added chroma key green, chroma key blue, missing texture, red uber, and blue uber materials
- Tweaked property order