Urgent Fixes + Addition to Medbay

- Fixed Virology Maintenance APC, should no longer fuck up the map nor
float in the air
- Re-added ligthswitch in Virology
- Replaced Glass Airlock from Paramedic to Morgue with normal airlock to
increase discretion
Merge pull request #1032 from dylanstrategie/Medbay-Revamp

Urgent Fixes + Addition to Medbay