ENH: update RSNA Vis tutorial for 2013

Ported changes from 4.3.1:
Rename to more generic test name as updating the tutorial for RSNA 2013
Use new data sets from Sonia.
Add screen shot GUI elements and flags and method, capture screen shots at tutorial steps.
Added the volume rendering in part 1.
Tweaked all parts to match up to tutorial.

Updated test to work with new DICOM widget on the trunk.

Issue #3507



git-svn-id: http://svn.slicer.org/Slicer4/trunk@22742 3bd1e089-480b-0410-8dfb-8563597acbee