Updates dispatched data in DB according to information gather by `mark_*` methods,

def _update_dispatches(self):
        """Updates dispatched data in DB according to information gather by `mark_*` methods,"""
        Dispatch.log_dispatches_errors(self._st['error'] + self._st['failed'])
        Dispatch.set_dispatches_statuses(**self._st)
        self._init_delivery_statuses_dict()