Removed Nostromo teleporter to prevent Marines from hiding in Telecomms

(Suggestion thread: http://newedenstation.com/showthread.php?tid=612)
Stop aliens being able to turn on/off the Emergency shield projectors and Shield Generators
Temporary fix - Make shuttle consoles run without power and be immune to disassembling

* This is meant as a temporary solution to rounds going stale with aliens having no way to reach the Sulaco and the Marines are turtling.
Merge pull request #111 from rahlzel/upstream

Removed Nostromo teleporter, disabled alien interaction with shield generators, and make shuttle consoles much more resilient