Lhnav regression on content/discussion profile

On content and discussion profiles, the page content is moved to the left on large screens. When looking at the code, that is expected indeed. The work-around for this can be removed once we drop the left hand navigation on these pages.

![screen shot 2014-03-28 at 10 03 20](https://cloud.githubusercontent.com/assets/109850/2548347/1800c5fc-b661-11e3-8df9-221758e865ae.png)