RC3:

Fixed console errors:
WorldTwoTextureBlend on non-displacement
Props with no vphysics model
Info_particle_system has no particle system name specified.

Updated preview postcards to match new signs added in rc2

RC2:

- Added many new signs to Intelligence, Battlements, and Exits.
- Blocked off paths through the central building (still utilized in the KOTH version) in order to streamline players past the paths leading to the intelligence.
- Refined lighting in spawn.
- Updated screenshots and thumbnail to match these adjustments