Added point deletion PointSetDataInteractorTest.
Local interactor instantiation.
Geometries for TestPointSet and ReferencePointSet have to be updated before comparison.
Testing data paths adapted to mitk-data file structure.
mitk-data revision tag adjusted.
Merge branch 'bug-16698-FixPointRemovalInPointSetDataInteractor'

Conflicts:
	CMakeExternals/MITKData.cmake