code: def rpc_get_num_names( self, **con_info ):
          
          db = get_db_state(self.working_dir)
          num_names = db.get_num_names()
          db.close()
  
          return self.success_response( {'count': num_names} )
docs: Get the number of names that exist and are not expired
          Return {'status': True, 'count': count} on success
          Return {'error': ...} on error