Toggle stash show

I had to stash some stuff for long term and I think having a toggle show stash will be helpful.

![screen shot 2014-07-02 at 10 08 33 pm](https://cloud.githubusercontent.com/assets/5281068/3465783/919981c8-0270-11e4-8bea-4a79bdd612e2.png)
![screen shot 2014-07-02 at 10 08 38 pm](https://cloud.githubusercontent.com/assets/5281068/3465784/92a24e06-0270-11e4-8d03-0dd47b8a7017.png)