Update spacenav interactive marker sample

update spacenav and interactive marker sample
```
roslaunch jsk_interactive_marker pr2_interactive_operation_sample.launch
```

![screenshot_from_2014-12-03 11 09 59](https://cloud.githubusercontent.com/assets/4415085/5274801/ce096200-7add-11e4-9c08-d6b998fd7d1c.png)