better display for changes

create a common directive for displaying list of changes

Signed-off-by: Pierre Tardy <pierre.tardy@intel.com>
enhance responsible users

Signed-off-by: Pierre Tardy <pierre.tardy@intel.com>
more enhancements responding to benallard coments

Signed-off-by: Pierre Tardy <pierre.tardy@intel.com>
Merge pull request #1438 from tardyp/changelist

display enhancements for changes and responsible users