Massive piping overhaul

- Almost every room in the station was reviewed. Pipes and
vents/scrubbers were shuffled
- Main goal is to absolutely minimize the amount of pipes under walls
(unless it's needed, for example rooms with one entrace)
- Flow is also more obvious, although it could still use an in-depth
review

This overhaul can and most likely will contain small errors, notably due
to the fact I've worked about 10 hours straight on it. Hold extreme
scrutiny

No changes have been made to the disposal system and pipes normally
shouldn't be stacked