message: Rename _rc to RobotCommand
diff: void MapViewState::pullRobotFromFactory(ProductType pt, Factory& factory)
  {
  - RobotCommand* _rc = getAvailableRobotCommand();
  + RobotCommand* robotCommand = getAvailableRobotCommand();
  - if ((_rc != nullptr) || mRobotPool.commandCapacityAvailable())
  + if ((robotCommand != nullptr) || mRobotPool.commandCapacityAvailable())
  {
  Robot* robot = nullptr;
  @@ -49,7 +49,7 @@ void MapViewState::pullRobotFromFactory(ProductType pt, Factory& factory)
  throw std::runtime_error("pullRobotFromFactory():: unsuitable robot type.");
  }
  - if (_rc != nullptr) { _rc->addRobot(robot); }
  + if (robotCommand != nullptr) { robotCommand->addRobot(robot); }
  }
  else
  {
  