Air alarm improvements.  Adds Central Atmos Control and a buffer between server room and station.
Fixes #3074
Fixes #3069
Fixes #2909
Merge pull request #3089 from SkyMarshal/airfixes

Air alarm improvements.  Adds Central Atmos Control and a buffer between server room and station.
Fixes #3082.
Merge pull request #3096 from Zuhayr/master

Solar charging fix.