[MAP] Turns theater backroom into a proper dressing room.

-Clown's crayons removed from backpack, they now spawn in the dressing room.
-Science lounge un-fortified; walls are normal walls, APC is in maintenance like other low-security areas. This should make it an interesting weak-point. :)
-Fixes a few minor wiring errors near the vault and in the HoP office.
Merge pull request #1382 from Cheridan/DressingRoom

[MAP] Turns theater backroom into a proper dressing room.