Video chat

Displays a separate list of video chat users. User list displays waartaa's username instead of irc nicks because of authentication issues with irc nicks. Will change it in future once a solution is found for this.

Currently this app uses public stun servers of google but that might not be enough to handle load. I suggest we should setup our own stun servers.
![screenshot from 2014-06-11 13 28 41](https://cloud.githubusercontent.com/assets/1271264/3241638/9152667c-f13f-11e3-908b-a64f98fafe55.png)
![screenshot from 2014-06-11 13 28 54](https://cloud.githubusercontent.com/assets/1271264/3241651/b4135d9c-f13f-11e3-9434-7d6dbd031946.png)
![screenshot from 2014-06-11 13 29 04](https://cloud.githubusercontent.com/assets/1271264/3241652/b5af1722-f13f-11e3-8d2b-74d721684064.png)
![screenshot from 2014-06-11 13 29 18](https://cloud.githubusercontent.com/assets/1271264/3241653/b85e9f6a-f13f-11e3-9286-4db324c75101.png)