Portuguese translation added.
Pin zope.interface to 4.0.5.
Prepare 2.2.9 release.
Update version number to 2.3.0 since we need a new master branch for Plone 5 due to the changes in the test setup (PLONE_APP_CONTENTTPYES_FIXTURE).
Merge branch 'master' into edit-comments-squashed

Conflicts:
	CHANGES.rst