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