Catkinized (although the following error occurs at initializing):

```
RosPluginProvider.load(rqt_smach/SMACH Visualization) exception raised in __builtin__.__import__(rqt_smach.rqt_smach, [SMACHVisualization]):
Traceback (most recent call last):
  File "/home/user/groovy/catkin_ws/src/rqt/rqt_gui/src/rqt_gui/ros_plugin_provider.py", line 78, in load
    module = __builtin__.__import__(attributes['module_name'], fromlist=[attributes['class_from_class_type']], level=0)
  File "/home/user/groovy/catkin_ws/src/executive_smach_visualization/rqt_smach/src/rqt_smach/rqt_smach.py", line 59, in <module>
    from .dotcode import SmachGraphDotcodeGenerator, NODE_NODE_GRAPH, NODE_TOPIC_ALL_GRAPH, NODE_TOPIC_GRAPH
ImportError: cannot import name SmachGraphDotcodeGenerator

PluginManager._load_plugin() could not load plugin "rqt_smach/SMACH Visualization":
Traceback (most recent call last):
  File "/home/user/groovy/catkin_ws/src/qt_gui_core/qt_gui/src/qt_gui/plugin_handler.py", line 89, in load
    self._load()
  File "/home/user/groovy/catkin_ws/src/qt_gui_core/qt_gui/src/qt_gui/plugin_handler_direct.py", line 54, in _load
    self._plugin = self._plugin_provider.load(self._instance_id.plugin_id, self._context)
  File "/home/user/groovy/catkin_ws/src/qt_gui_core/qt_gui/src/qt_gui/composite_plugin_provider.py", line 71, in load
    instance = plugin_provider.load(plugin_id, plugin_context)
  File "/home/user/groovy/catkin_ws/src/qt_gui_core/qt_gui/src/qt_gui/composite_plugin_provider.py", line 71, in load
    instance = plugin_provider.load(plugin_id, plugin_context)
  File "/home/user/groovy/catkin_ws/src/rqt/rqt_gui_py/src/rqt_gui_py/ros_py_plugin_provider.py", line 66, in load
    return super(RosPyPluginProvider, self).load(plugin_id, plugin_context)
  File "/home/user/groovy/catkin_ws/src/qt_gui_core/qt_gui/src/qt_gui/composite_plugin_provider.py", line 71, in load
    instance = plugin_provider.load(plugin_id, plugin_context)
  File "/home/user/groovy/catkin_ws/src/rqt/rqt_gui/src/rqt_gui/ros_plugin_provider.py", line 84, in load
    raise e
ImportError: cannot import name SmachGraphDotcodeGenerator
```