Robot module changes.

Thread: http://baystation12.net/forums/viewtopic.php?f=5&t=10775&p=228763

- Medical module has been split into Crisis and Surgeon.
- Surgeon has all surgical tools, nanopaste and advanced trauma pack. Also has bicaridine, inapro and dex.
- Crisis has a mounted roller bed, various tools inherited from Medical, and tricord, tramadol and inapro.
- Engineering module has been split into Engineering and Construction.
- Construction has an RCD, plasteel, a wrench and a plasma cutter.
- Engineering has a full toolset, a drone gripper and a matter decompiler.
- Service has been split into Service and Clerical.
- Service is largely unchanged but has lost its pen.
- Clerical has a buffed robopen (five colours!), a paper dispenser and a paperwork gripper (paper, ID cards, clipboards).

Also did a little bit of refactoring for some of the resource regeneration procs that robots use.