[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.
Updates bed and blanket sprites to not be ancient. Credit to Wjohnston for base sprite and Pete for modifying it faster than I could.
Merge pull request #1382 from Cheridan/DressingRoom

[MAP] Turns theater backroom into a proper dressing room.
Merge pull request #1397 from Jordie0608/Bedstuff

Updates bed and blanket sprites to not be ancient.