Finish export of AWDAnimator and AWDAnimationSet

[80prozent]

at this point, the AWDSkeleton and the AWDVertexANimSource are always set to "simple_mode=true".

This causes the exporter to automaticly create AWDAnimator and AWDAnimationSet on export.
To allow for more complex animationSetups (reuse animationclips in different animators etc), one must set the AWDSkeleton "simple_mode" to false, and create the animators and animationSets manually as 3dsmax-modifiers.

This is basically implemented and should work, but needs some more testing and maybe improvements, so for now i disabled the "simple_mode"-checkbox, so it will always be set to false.