Various Ghar / Rebel Ghar fixes

Ghar Empire
Changed Bombard Crawler to Strategic
Changed Scutters squad leader now has Leader 1 (as no other ranks are available for the squad and it is mandatory)
Changed Ghar Outcast Slave Driver has Leader 1 by default.
Changed Ghar Outcast Leader has Leader 1 by default. Also removed option for leader 3

Rebel Ghar
Removed duplication of Army Options
Changed Scutters squad leader now has Leader 1 (as no other ranks are available for the squad and it is mandatory)