Editor: made fuzzy auto-clear behavior consistent

The *Needs work* mark will be auto-cleared in all situations except in
those that the user explicitly checked the box.

Fixes evernote/pootle#249.
Bugfix: Show news for a given project

The problem is that registering the pootle_project URLs before the
pootle_notifications ones caused 'pootle-notifications-project-notices'
URL pattern to be never matched, and instead the 'pootle-project-overview'
URL pattern was the one that matched always.