ENH: Script to generate API differences between two git revisions

The script uses git and ctags to generate a list of classes and public
methods added/removed.
It also lists newly deprecated methods.
The flag --wikiOutput can be used to print the report with wiki markup.

Change-Id: I12a9df100099527599aa5762540e01bd09460c0b
Merge topic 'semantic_diff_ctags' into master

bfed0a05 ENH: Script to generate API differences between two git revisions
Add new set of catalyst web widgets

This commit add a meta-widget at the analysis level
to trigger creation of dynamic views along with a
query/search widget.

Change-Id: I43cee04a3e98010a9270648236ce3d9e128d9ef9
Merge topic 'vtkweb-catalyst' into master

59b5c516 Add new set of catalyst web widgets