bug - can't move a UFO - always requires SHIFT to move regardless of the config option for Lock Action Bars

[ScottIngram]

even if action bars are not locked
C_CVar.GetCVar("lockActionBars")
UFO still requires the SHIFT key to move a UFO off the action bar

[ScottIngram]

I can find no way to know what the user has picked so Ima just use IsModifierKeyDown() instead of IsShiftKeyDown()

This is now ready for the next push