STYLE: Improve readability of subject hierarchy logic test using vtkNew

git-svn-id: http://svn.slicer.org/Slicer4/trunk@23247 3bd1e089-480b-0410-8dfb-8563597acbee
STYLE: Improve error output of TestTreeOperations in subject hierarchy test

git-svn-id: http://svn.slicer.org/Slicer4/trunk@23248 3bd1e089-480b-0410-8dfb-8563597acbee
ENH: Simplify vtkMRMLTransformableNode::GetParentTransformNode

git-svn-id: http://svn.slicer.org/Slicer4/trunk@23249 3bd1e089-480b-0410-8dfb-8563597acbee
ENH: Update subject hierarchy PopulateScene to check nodes are added.

This commit basically removed the assert and add corresponding
test.

git-svn-id: http://svn.slicer.org/Slicer4/trunk@23250 3bd1e089-480b-0410-8dfb-8563597acbee
STYLE: Update vtkMRMLSubjectHierarchyNode to use vtkNew

Also fixes indent

git-svn-id: http://svn.slicer.org/Slicer4/trunk@23251 3bd1e089-480b-0410-8dfb-8563597acbee
STYLE: Improve error output of subject hierarchy TestTransformBranch

git-svn-id: http://svn.slicer.org/Slicer4/trunk@23252 3bd1e089-480b-0410-8dfb-8563597acbee