Post-dev/master merge map fixes

Restores maintenance areas to the new variants.
The HoP's office is no longer a crew sleeping quarter.
Fixes disconnected/mismatched power cables all over the place.
A few pipe fixes, mainly in the engine room.
Connects the engineering power monitor to the main/red power grid.
Emergency shutters.
New icon for the research dock.

Probably isn't all issues but should cover the more obvious ones.