Summerize A02

I made some mayor changes to the map:

• Improved map layout, especially in main symmetrical buildings.
• Added path to the Building 2 roof.
• Added first textures and more small designs to the map.
• Fixed no_entry texture on func_respawnvisualizer in both teams.
• Removed player clip from Building 2.

I'll be getting soon into optimizing and designing, so I would appreciate to see the current map feeling/gameplay kind of review from you.