every member can now register for wiki change notifications
Merge pull request #612 from leider/master

sending notifications to superusers on registration of new members
Merge commit 'a85d1a8a2b52ecce0c12ce3fa2f7ef61c1df7ec6' into temporary

Conflicts:
	lib/notifications/index.js
grunt-mocha-test works again with 0.8
Merge pull request #613 from leider/temporary

every member can now register for wiki change notifications