Further Medbay Revamp Changes

- Added lightswitch to Break Room
- Made all the new areas into their own separate areas instead of making
new instances. This should avoid asset spaghetiffication and make it
much easier to get them actual new icons when time is due
- That change should also fix a temporary bug that made some lightswitches
non-functional
- Virology Maint is now its own area
Why signal.ogg?