added method to add a video with a path to a metadatafile - interfaces changed
added some checks to addVideo(...)
oops... forgot some brackets again
implemented overlaycontroller (incomplete)
added method insertOverlayWithPixelDiff
Committed unommitted changes ... sorry
Merge branch 'Natascha' of https://github.com/V02460/CTT
Merge branch 'Natascha' into somewhatBeautyQueen

Conflicts:
	CTT/ExtendedVideoListController.h