0713bcd8bc
plone.app.discussion is an official Plone core package, thus their translations belong to plone.app.locales. This commit removes the plone.app.discussion domain and changes it for plone. This fixes: https://github.com/plone/plone.app.discussion/issues/66
For developers documentation on plone.app.discussion, see http://packages.python.org/plone.app.discussion.