Add detail toggle to reviewer detail page (bug 935662)

Adds toggle-able details as requested.

![screenshot 2014-06-03 15 41 26](https://cloud.githubusercontent.com/assets/1106/3167569/84e4c86e-eb70-11e3-9130-5f2129be6f13.png)

![screenshot 2014-06-03 15 41 38](https://cloud.githubusercontent.com/assets/1106/3167570/87461ec8-eb70-11e3-98b6-351639ecaab7.png)