Method commandUndo

Tools/LayoutEditor/UndoManager.cpp:93–99

	}

	void UndoManager::commandUndo(const MyGUI::UString& _commandName, bool& _result)
	{
		undo();
		WidgetSelectorManager::getInstance().setSelectedWidget(nullptr);

		_result = true;
	}

	void UndoManager::commandRedo(const MyGUI::UString& _commandName, bool& _result)
	{