Rebel and Empire mini-mod

skirmish for the Empire. The Rebels get The Republic Stealth ship at level 3,4&5 and a modified Corellian Corvette at 2,3,4&5 in both GC and skirmish. The seismic tank and the T4C battle tank are only build able at the heavy vehicle factory in GC and skirmish.Also includes the ship upgrade mod by venators_all_the_way.The Empire also gets the Acclamator MK3 at a level 2,3,4&5 space station in GC and level 3,4&5 in skirmish.