improved ImagePainter interface (no update() needed anymore, reload() to indicate image changes)
added Larry's methods to ConnectedComponent (translate, intersect, operator==)
fixed type in comment of ImagePainter
fixed compile-errors for new pipeline architecture
changed for new Input/Output API
changed for new pipeline interface
changed MserParametersCollector for new input isSet()
removed warnings
improved ImagePainter: color indices for values >= 1, grayscale otherwise
removed debug statement in ImageReader
added exception handling to ImageReader
Merge remote-tracking branch 'funkey/master' into blockwise

Conflicts:
	ConnectedComponent.cpp
	ConnectedComponent.h
	io/ImageReader.cpp
adjusted Image*Rader for new pipeline API