Map fixes and changes

-AI chamber bigger, with an additional turret and additional
wall-mounted flashes.
-Moved AI turrets for bigger coverage and harder destruction.
-Emergency AI Maintenance button in the captain's office. Open the AI's
blast door. Captain-level access required.
-Kitchen Shutters from Kitchen to bar,
-Linked clown office to maintenance (POWER GRID)
-Made Secure Storage (ENGINEERING) Bigger. Added in the spare
engineering pipe dispensers.