cleaned up (removed files from cmake which are not in the core any more)
removed ImageMapper2DTest because the ImageMapper2D was completely replaced by the ImageVtkMapper2D

There are many new tests for the ImageVtkMapper2D, the old test class is not needed any more.
further work
Basic combination filter test added to list of tests.
Create assignment operator for mitk::PixelType
Fix memory leak in ChannelDescriptor
Merge branch 'bug-11048-memory-leak-channel-descriptor'
activated and extended RawImageFileReaderTest
Use ITK 4.5 RC03 in superbuild
Resolve ambiguous call to IsOnPlane
Set scale of follower
fix update problem of labelOverlay

Conflicts:
	Plugins/org.mitk.gui.qt.annotationplacer/src/internal/AnnotationPlacer.cpp
Add OverlayManager usage option to mappers
convenience method for adding overlays to a specific renderer
handle null pointers in labeloverlay
fix removefromBaseRenderer
Undo-Redo Working with PointSetDataInteractor
Added Docu
Merge branch 'bug-15486-ApplyMatrixTransform'
added new statemachine patterns for tools