Fixed responsive secondary nav display

Before: 

![screenshot 2014-08-20 18 50 11](https://cloud.githubusercontent.com/assets/1451471/3984682/11a8da14-288a-11e4-9f19-06d90ccb78ac.png)

After:

![screenshot 2014-08-20 18 50 47](https://cloud.githubusercontent.com/assets/1451471/3984692/29cd2e56-288a-11e4-8ede-036ab429d226.png)

There's still primary nav displayed tho. These links are the same as in the hidden nav on the right. Could use some help with proper approach to hide it... @Ianfeather, @i-like-robots, @robuye?