Added diagnostic page to config section

[MLHR-1024](https://malhar.atlassian.net/browse/MLHR-1024)

![screen shot 2014-04-24 at 5 13 26 pm](https://cloud.githubusercontent.com/assets/1390651/2796432/83e2dfc2-cc0e-11e3-90c3-e89f7b057c9c.png)