Have "Minor Edit" checkbox when editing Decision or Feedback, which can
be used to suppress email notification of changes.
On reflection, the concept of a "minor edit" doesn't currently
make sense for feedback
Merge of work for minor notifications
(http://aptivate.kanbantool.com/boards/5986#tasks-1572801)
More on "minor edit": this now applies to feedback after all, and
the old logic of not notifying someone of changes they make to their
own feedback has been removed.
Merge branch '1572801_minor-edit' into develop
Merge branch 'develop' of https://github.com/rdn32/econsensus into develop

Conflicts:
	django/econsensus/publicweb/tests/notification_test.py