(Issue 623) Point discussions emails to the right module
Merge branch 'issue-623' of git://github.com/mrvisser/Hilary into issue-623
Added some documentation
Test that recent contributors to content and discussion get emails
Merge branch 'issue-623' of git://github.com/mrvisser/Hilary into issue-623

Conflicts:
	node_modules/oae-discussions/tests/test-activity.js