Added stats page in webapp environment.

Basically, copied the stats generation code in http://jot-vertnet-portal-stats.appspot.com/ to the webapp environment and modified the rendering to align with the new look'n'feel. See attached screenshot.
![screenshot from 2014-02-20 13 45 08](https://f.cloud.github.com/assets/642210/2223240/f8b81464-9a6f-11e3-8c4a-4caa96ba734f.png)