[3CP] Dispose A4

-Minor detailing in indoor areas
-Textured side building in middle
-Added 3D skybox
-Minor detailing on bunkers
-Detailed backgrounds

I also repacked the map as requested and put the version number in the bsp name.

Alpha 3 Released! Here's the changelog:

-Added bunkers outside with health and ammo
-Removed connecting rooms from main entrances to control points
-Added another staircase to left side that leads to main entrance
-Textured new roof geometry
-More detailing in secondary garages
-Moved props in window rooms
-Moved window in window rooms to show the connector between control points and main entrance
-Adjusted skins on a few props on Blu's side

Alpha 2 Released

• Added more props around middle control point
• More props and geometry on roofs of each base
• Clipped behind the sheds to stop bots from trying to go behind them
• More props in garages
• Minor detailing at middle