Fixed erraneous material causing crashes after the latest shader update.

- Fixed several clipping issues
- Removed pillar in rotator to A from CT Spawn
- Improved interior lighting
- Improved shaders on gold-like materials
- Gameplay adjustments on B
- Fixed overly transparent glass on low shaders in mid
- Fixed stairs leading to nowhere on A
- Display case is now breakable in T Spawn
- Added story elements to CT Spawn, mid and A for further clarification on the map scenario
- Added efflorescence stains to overly dark backgrounds
- Added a modest amount of grime
- Fixed rare bug on window materials
- Slightly shortened some headshot-height walls
- Fixed a powerful self-boost