Rqt 3d plot

3d plotter like nakanish-viewer

http://youtu.be/9JR2L0IIeTU
http://youtu.be/CDIwalbDmzw

* new package called `jsk_rqt_plugins`
* implemented as rqt widgets
* you can call this plotter by `rosrun jsk_rqt_plugins rqt_plot_3d`

![screenshot_from_2014-05-03 03 20 33](https://cloud.githubusercontent.com/assets/40454/2866269/91eb4b0e-d226-11e3-9224-5450284e7d77.png)


![screenshot_from_2014-05-03 02 39 45](https://cloud.githubusercontent.com/assets/40454/2865820/6871e90e-d221-11e3-890f-24086cbd149d.png)

```sh
$ rosrun jsk_rqt_plugins rqt_3d_plot '/KenshiroLegs/nervouslog/tension[0]' '/KenshiroLegs/nervouslog/tension[1]' '/KenshiroLegs/nervouslog/tension[2]' '/KenshiroLegs/nervouslog/tension[3]' '/KenshiroLegs/nervouslog/tension[4]' '/KenshiroLegs/nervouslog/tension[5]' '/KenshiroLegs/nervouslog/tension[6]' '/KenshiroLegs/nervouslog/tension[7]' '/KenshiroLegs/nervouslog/tension[8]' '/KenshiroLegs/nervouslog/tension[9]' '/KenshiroLegs/nervouslog/tension[10]' '/KenshiroLegs/nervouslog/tension[11]' '/KenshiroLegs/nervouslog/tension[12]' '/KenshiroLegs/nervouslog/tension[13]' '/KenshiroLegs/nervouslog/tension[14]' '/KenshiroLegs/nervouslog/tension[15]' '/KenshiroLegs/nervouslog/tension[16]' '/KenshiroLegs/nervouslog/tension[17]' '/KenshiroLegs/nervouslog/tension[18]' '/KenshiroLegs/nervouslog/tension[19]' '/KenshiroLegs/nervouslog/tension[20]' '/KenshiroLegs/nervouslog/tension[21]' '/KenshiroLegs/nervouslog/tension[22]' '/KenshiroLegs/nervouslog/tension[23]' '/KenshiroLegs/nervouslog/tension[24]' '/KenshiroLegs/nervouslog/tension[25]' '/KenshiroLegs/nervouslog/tension[26]' '/KenshiroLegs/nervouslog/tension[27]' '/KenshiroLegs/nervouslog/tension[28]' '/KenshiroLegs/nervouslog/tension[29]' '/KenshiroLegs/nervouslog/tension[30]' '/KenshiroLegs/nervouslog/tension[31]' '/KenshiroLegs/nervouslog/tension[32]' '/KenshiroLegs/nervouslog/tension[33]' '/KenshiroLegs/nervouslog/tension[34]' '/KenshiroLegs/nervouslog/tension[35]' '/KenshiroLegs/nervouslog/tension[36]' '/KenshiroLegs/nervouslog/tension[37]' '/KenshiroLegs/nervouslog/tension[38]' '/KenshiroLegs/nervouslog/tension[39]' '/KenshiroLegs/nervouslog/tension[40]' '/KenshiroLegs/nervouslog/tension[41]' '/KenshiroLegs/nervouslog/tension[42]' '/KenshiroLegs/nervouslog/tension[43]' '/KenshiroLegs/nervouslog/tension[44]' '/KenshiroLegs/nervouslog/tension[45]' '/KenshiroLegs/nervouslog/tension[46]' '/KenshiroLegs/nervouslog/tension[47]' '/KenshiroLegs/nervouslog/tension[48]' '/KenshiroLegs/nervouslog/tension[49]'

```