82ndab-Bravo17 Pullrequest rebased for v0.9F(HF1)

this should be it, but please check before merging :)
**by: @82ndab-Bravo17

- smallGroup and midGroup now have slightly random number of AI
- Reduced code duplication for main missons with a vehicle 
- after a small setup most mission code is run from 1 file. This also includes having 1-5 smallGroups instead of 1 midGroup of AI, currently set at 2 for all main missions except the MBT which has 3 squads, so that some missions can be made more challenging than others.
- Ability to turn off Gun Store empty/occupied indicators via #include file entry
- Ability to turn on the 'Red Circle' rough location indicator similar to the one in the Beta via #include file entry
- Add defaults and move mission variables into main_config.sqf
- Allow choice of vehicle weapons etc amounts