Revert "Revert "Added singularity and fixed centcom shuttle.""

This reverts commit e59df5706a26b456f8f052b92076fa2d9e07b8ee.
Lighting fixes and PM all antags
Added singularity! and fixed a few minor things.
Merge pull request #65 from jamiedigweed/master

Added Singularity and fixed centcom shuttle. Aztec approved.