some changes.
Fixed out-of-sync index (Qt model index vs. m_Nodes index).
COMP: Adapted last tests.
Merge branch 'bug-14880-ToFTestsWithNewAPI'
Merge branch 'bug-14919-SelectionChangeOnDataNodeRemoval'
Replaced itkRigid3DTransform with itkVersorRigid3DTransform as recommended by itk

Rigid3DTransform is now the base class of all transforms and hence has no New() macro
any more. There is a legacy transform the itkv3Rigid3DTransform but in its class
documentation the itkVersorRigid3DTransform is recommended
Fixed build error due to missing transform_type
Replaced itkRigid3DTransform with itkVersorRigid3DTransform (same as two commits earlier)
Removed unused include which actually does not exists in itk 4 anymore and made some renaming
Made some renaming as written in the migration guide: especially deformation into displacement
update generate data issues fixed in mitkvtkpointsetmapper3d
added update changes to mitkGeometrymapper2d
Changes in different modules for ITKv4 integration.
added update changes to mitkFiberBundleXThreadMonitorMapper3D
added update changes to various mappers
added update time and changed VectorImageVtkGlyphMapper3D
added update changes to mitkUnstructuredGridMapper2D
Image writing error for .nrrd files fixed.
New PointSetMapper (only missing text functionality)
remove old GL Point Set Mapper 2D