In this course, the auto recovery learned to restore multiple views of a document. Also, in the course of the change,
the LoadDispatchListener became superfluous, and was removed.
Also, the loader code in dbaccess was slightly adjusted, since now the connectController call is in the responsibility
of the loader, and must not happen inside the XController::attachModel call anymore. This change made the
ModelControllerConnector class superfluous, so it has been removed, too.