Fixed katys stuck if trying to fire with no ammo. Note that when changing speed, the new speed doesn't apply until a new move order is issued, which kinda sucks.
Allow units to have smoke generators that don't require a weapon (unit emits smoke cloud at it's current location)
Gave many ships built-in smoke generators (choice was based on whether this ship type would have smoke charges IRL)
Merge pull request #28 from ashdnazg/katy_script

Fixed katys stuck if trying to fire with no ammo.
make the gmtoolbox a flag-category unit so units stop targeting it
Disable smoke screen button when it reloads