added stacked table view for forums page

Desktop:
![ss 2014-04-14 at 3 11 55 pm](https://cloud.githubusercontent.com/assets/176013/2699670/13f91724-c409-11e3-9777-be6d1128fe79.png)

Mobile:
![ss 2014-04-14 at 3 11 28 pm](https://cloud.githubusercontent.com/assets/176013/2699669/13f9013a-c409-11e3-9a41-c34fa11f4f4d.png)