Delete an object with Discipline

        Only argument is a Django object. Analogous to Editor.save_object.

def delete_object(self, obj, post_delete=False):
        """Delete an object with Discipline

        Only argument is a Django object. Analogous to Editor.save_object.
        """
        # Collect related objects that will be deleted by cascading
        links = [rel.get_accessor_name() for rel in \
                 obj._meta.get_all_related_objects()]
        # Recursively delete each of them
        for link in links:
            objects = getattr(obj, link).all()
            for o in objects:
                self.delete_object(o, post_delete)
        # Delete the actual object
        self._delete_object(obj, post_delete)