Communications Console Update

-Added emergency maint access function to comms console. Removes access restrictions on maintenance and external airlocks. Can be toggled on and off. Captain-level access required.
-Minor modifications to map /area/s to make this work
-Updated Comms console interface (https://www.dropbox.com/s/zy33829tcqby9hd/comm.png)
-Message List is now restricted to Command Staff. (Classified transmissions go here!)
-AI can now control alert levels and emergency access via comms console
Merge pull request #1587 from Ikarrus/emergency

Comms Console Update/Emergency Maint Access [MAP]