update NeedleFinder to be compatible with new VTK version
Merge pull request #826 from gpernelle/update-NeedleFinder-master

update NeedleFinder to be compatible with new VTK version
ENH: SlicerRT 0.14.7: Bugfixes and following Slicer core changes. See more info at https://www.assembla.com/code/slicerrt/subversion/changesets/compare/1929...2039
Merge pull request #827 from SlicerRt/update-SlicerRT

ENH: SlicerRT 0.14.7: Bugfixes and following Slicer core changes. See mo...