BUG: Support vtkStringArray as model field array

Closes #3344

git-svn-id: http://svn.slicer.org/Slicer4/trunk@22695 3bd1e089-480b-0410-8dfb-8563597acbee
STYLE: minor edits for 4.3 documentation

Fix formatting errors, attributions, phrasing.



git-svn-id: http://svn.slicer.org/Slicer4/trunk@22697 3bd1e089-480b-0410-8dfb-8563597acbee