FIA Orbat implementation

changed remaining instances of Blue/Red/Green into NATO/CSAT/AAF
added FIA relevant scripts : f_briefing_fia and folk_assignGear_fia
modified setGroupIDs and setLocalGroupMarkers to include FIA
Fixed  https://github.com/ferstaberinde/F3/issues/71
Added FIA Orbat (CO,DC,A,B,C,MMG,MAT,ENG) 

Tweaked classes in other Orbats for consistency:
all CO/DC are now officer class
all Squad Leaders are now SL class
all Assistant AR are now AAR class
all Rifleman (AT) are now LAT class

ToDo:
FIA crewman needs uniform
further tweaks to FIA loadout?