ctf_gate1 increasing gameplay

As the two bases are connected with just one long yard the gameplay is a bit too simple. Thinking about how I solved this didn't make me happy so I choose to change that. Dropping the current flagrooms as they were small, goodlooking because of TRaKs filth textureset and using the opposite ends as new flag bases sounds okay. The blue base is rotated by 180° and connected directly to the red pillar room just having the big wall / new gate between them.

I hope to get a straighter and faster gameplay.