More updates to command units, this time to bring the GD command units up to the improved standards of the regular command units. The CP and MP cost of all command units was reset - all command breeds now cost the same regardless of rank. Initially, the intent was for command units to cost more the higher up the chain of command they went, but in practical use, they function nearly identical to any other unit, sometimes with less utility, so it makes little sense for them to artificially cost more. Also I've added a Major that's not a panzer commander and a late war Leutnant, and ensured the command breeds are logically progressed through the units.

Just a minor update to the purchase screen icon for the non-GD tank crew, and arranged some units on the purchase screen differently to group similar units together more, particularly the supply units.

Minor changes to senior non-GD command units to include the Oberst and expand the role of the Hauptmann.

Minor bug fixes and added a medic to most command units.