Return all names in a namespace, paginated
        Return {'status': true, 'names': [...]} on success
        Return {'error': ...} on error

def rpc_get_names_in_namespace( self, namespace_id, offset, count, **con_info ):
        """
        Return all names in a namespace, paginated
        Return {'status': true, 'names': [...]} on success
        Return {'error': ...} on error
        """
        if not check_namespace(namespace_id):
            return {'error': 'Invalid name or namespace', 'http_status': 400}

        if not check_offset(offset):
            return {'error': 'invalid offset', 'http_status': 400}

        if not check_count(count, 100):
            return {'error': 'invalid count', 'http_status': 400}

        if not is_namespace_valid( namespace_id ):
            return {'error': 'invalid namespace ID', 'http_status': 400}

        db = get_db_state(self.working_dir)
        res = db.get_names_in_namespace( namespace_id, offset=offset, count=count )
        db.close()

        return self.success_response( {'names': res} )