ENH: upgrade CompareVolumes

commit 583d4a78b0b2b9609e023b5a37f64ed154e0d180
Author: Steve Pieper <pieper@bwh.harvard.edu>
Date:   Thu Aug 28 19:03:29 2014 -0400

    Add lightbox render mode and extra controls

commit 1370b2bf6990db182cb12bc23bfaa414af3f1278
Author: Steve Pieper <pieper@bwh.harvard.edu>
Date:   Thu Aug 28 14:41:01 2014 -0400

    Fix issue with cursor not being turned back on after reveal

From: Steve Pieper <pieper@bwh.harvard.edu>

git-svn-id: http://svn.slicer.org/Slicer4/trunk@23653 3bd1e089-480b-0410-8dfb-8563597acbee
ENH: improve the script template by adding documentation link

From: Steve Pieper <pieper@bwh.harvard.edu>

git-svn-id: http://svn.slicer.org/Slicer4/trunk@23654 3bd1e089-480b-0410-8dfb-8563597acbee
ENH: Update LandmarkRegistration and CompareVolumes

Several improvements to the documentation and features.

From: Steve Pieper <pieper@bwh.harvard.edu>

git-svn-id: http://svn.slicer.org/Slicer4/trunk@23655 3bd1e089-480b-0410-8dfb-8563597acbee
BUG: 3808: fix failing test - add some pointer checks

Fixes regression detected here:

http://slicer.cdash.org/testDetails.php?test=5704490&build=266935

From: Steve Pieper <pieper@bwh.harvard.edu>

git-svn-id: http://svn.slicer.org/Slicer4/trunk@23656 3bd1e089-480b-0410-8dfb-8563597acbee
ENH: Added a test for the ExtractSkeleton CLI. Fixes #3333

Co-authored-by: Jean-Christophe Fillion-Robin <jchris.fillionr@kitware.com>

From: Dirk Padfield <padfield@ge.com>

git-svn-id: http://svn.slicer.org/Slicer4/trunk@23657 3bd1e089-480b-0410-8dfb-8563597acbee