Reenabled reflections

Fixed all known bugs
Slightly redone the gunstore
Made the lighting a bit brighter
Added debris flag to small props
Minor optimizations

Added new doors
Added a lock button in the gunstore
Fixed missing glass (again)
Fixed missing models
Better optimization

Fixed locked doors
Fixed unbreakable props
Fixed dark textures
Fixed a broken cubemap
Fixed the invisible glass
Fixed a glass window
Adjucted HDR to make the lighting softer
Added the PD shield

Fixed an error model