added nav bar to newsfeed

nav bar added to newsfeed.html
--'home' tab is not linked
--will need to be replicated on other pages
--log out has no functionality (didn't want to mess with js while Aleks and Brendan are working on it)

![screen shot 2014-06-26 at 3 07 48 pm](https://cloud.githubusercontent.com/assets/7405953/3405510/6b6a46f0-fd7e-11e3-88a5-62d0151e142a.png)