Fixes and small additions to the map

- Changed all hull walls at Brig Washing Room to be regular walls (After
: http://i.imgur.com/R1JMVXG.png )
- Added lightswitches to Vault and Detective
- Removed a random sign in the middle of space by MoMMI Nest
- Fixed Toxins Mixing area that caused major oddities, notably giving
Toxins no APC and all of South-East maintenance one, and other odd
effects (Before : http://i.imgur.com/fgnqSF1.png . After :
http://i.imgur.com/IpjVdNL.png )
- Isolated Security Disposals Belt with inwards rglass panels and
extended rwall there (After : http://i.imgur.com/yVqjIt4 )
- Changed camera in Vault to Motion Sensor to make Vault thefts
significantly harder