Area changes

Reorganised area trees, and changed the appropriate files.
Important area changes are:
- Engine areas replaced with engineering areas. Atmos moved under engineering
- Toxins areas replaced with science areas. Robotics, mechbay, and the corridor now under science
- Quartermaster areas replaced with supply areas. QMs office is still qm
- Solar areas, and solar maintenance areas, now standardised according to positions
- Maintenance areas now renamed according to position
- All head offices are now under their department areas, excluding hop, which is still under crew quarters as hop
- Heads now have quarters under crew_quarters/heads, in case new maps make use of private quarters
- RD head office renamed from HoR to RD
- CE head office renamed from Chiefs_Office to CE
- Vault moved to storage, not sec, since that makes a bit more sense

I'd be careful with the map, since it's too difficult to read the changes.
Just open the map, replace the areas, and save it locally. This version is probably slightly wrong.