Map: tgstation.2.1.0.0.1.dmm Internal Affairs Spawn Fix (& SKRELL ARMS)

Hopefully stops the IA agents from spawning on the start screen. Also a quick zone fix to the AI core from where that transit tube was there. It was labeled as space! How rude.

Also a quick sprite adjustment for skrell bodies; their right sides (when facing north) were popping out of clothes. Moved one pixel over to line up.