Fix regression from 98af7649f04a74673ca83678073d56c8bb609243: zcml:condition condition for plone.app.contentypes was broken. Afaik zcml:condition does not match on class level, only on package level: it got no grip on class level. So imo its enough to match on class level. So imo its enough to match on plone.app.contenttypes if not, we need a different approach; here everythings working fine now.