At long last, and admin nav bar!!!

This one is for you @sandal :smile: Nothing too fancy but it gets the job done.

## On a non-article page
![screen shot 2013-08-31 at 12 21 49 pm](https://f.cloud.github.com/assets/40662/1062575/7bf898d4-1259-11e3-8a9f-60bf872a1952.png)

## On an article page
![screen shot 2013-08-31 at 12 21 56 pm](https://f.cloud.github.com/assets/40662/1062576/7c027160-1259-11e3-808c-12846588b481.png)