Require source collection for RID-based item moves
Require source collection for RID-based item moves

RID is not guaranteed to be unique, so we need to restrict it to a single collection.
Otherwise there's a danger that we would move incorrect items. RID-based moves are
needed by the Kolab resource for instance.

kolab-groupware/akonadi,kolab-groupware/akonadi,kolab-groupware/akonadi,kolab-groupware/akonadi