AI groups // missions minor adjustments

TMK Wasteland
changelog 11-4-2014

to be reviewed by Tangled

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AI Groups

* midGroup changed to 10 soldiers including Leader
* largeGroup changed to 16 soldiers including Leader

mainMissions

* Main Tank mission AI group changed to Large
* Outpost mission AI group changed to Large

sideMissions

* Weapons Cache mission AI group changed to Large

all missions

* chance of missions generation changed
* more valuable missions dropped chance of spawning
* convoys and similar normal military activities have a increased chance
of spawning
* Outpost mission chances has been increased 300%