Qmb enhancements

* qmb.fig and qmb.m updated to enable model shifting and rotating using push buttons
* also added zone axis control and viewing on main screen
* reorganized things a bit to fit more nicely, video below shows the gist of what's changed (sorry if you're on a slow connection!)


![qmb-demo](https://cloud.githubusercontent.com/assets/1278301/5193635/3bfcb342-74d1-11e4-8091-b64bc45911b0.gif)