Added CRP, HCU Cost, Orbital Preview.

Biggest win: resolved #31.  I'll open #38 to address directional
indicators.
Resolved #37, small beacons no longer take the destination beacon's
velocity into account.  Should make local transfers more intuitive.
Switched Karborundum to CRP (per #35), so all fuel counts and costs
multiply by 5 and density is overall a bit higher.  KBD is only
tweakable if Karbonite is not installed, otherwise refining is
obligatory.  Added toggle for FTT to make harvesting obligatory, when
that's out.
Made the Heisenkerb Compensator take extra Karborundum per ton of
protected material (including Kerbals) per #33.
Addressed #34.