initial version of mission scripting
add missing files
intermediate state
make polls script-local
add hudgetanimations, continue missions
fix windows build
continue mission_script
add demo script
added MissionStatePolL
aabbenteredpoll only triggeres once
add a fight mission
merge with master
fix iterators
fix hud::settarget
fix hud
remove debugmsg
merge with origin
fix tests
scriptengine sets invalid scriptkeys on scriptables on its destruction
merge with master