BUG: 3672. Made  Eigenvector to display for lines/tubes glyphs in vtkMRMLDiffusionTensorDisplayPropertiesNode to better map onto UI combo box index

git-svn-id: http://svn.slicer.org/Slicer4/trunk@23147 3bd1e089-480b-0410-8dfb-8563597acbee