Get the number of names owned by an address throughout history
        Return {'status': True, 'count': ...} on success
        Return {'error': ...} on failure

def rpc_get_num_historic_names_by_address(self, address, **con_info):
        """
        Get the number of names owned by an address throughout history
        Return {'status': True, 'count': ...} on success
        Return {'error': ...} on failure
        """
        if not check_address(address):
            return {'error': 'Invalid address', 'http_status': 400}

        db = get_db_state(self.working_dir)
        ret = db.get_num_historic_names_by_address(address)
        db.close()

        if ret is None:
            ret = 0

        return self.success_response( {'count': ret} )