Top menu proposal

This request is a proposal to the top level hamburger menu.  It can probably be improved upon some more and the `search-navbar.css.scss` and `search-bar.css.scss` files can be combined.

Menu is now in line button:
![screen shot 2014-05-15 at 1 01 23 pm](https://cloud.githubusercontent.com/assets/1656824/2990042/f2c9d6da-dc6b-11e3-88ff-ae35b55499f0.png)

Breaks correctly at all levels:
![screen shot 2014-05-15 at 1 01 09 pm](https://cloud.githubusercontent.com/assets/1656824/2990046/0ad846da-dc6c-11e3-9bc9-076029741d6a.png)

![screen shot 2014-05-15 at 1 01 13 pm](https://cloud.githubusercontent.com/assets/1656824/2990050/0f47f814-dc6c-11e3-926b-841b84ad1ba2.png)

![screen shot 2014-05-15 at 1 00 56 pm](https://cloud.githubusercontent.com/assets/1656824/2990054/18e9ac3c-dc6c-11e3-856c-b478662fabda.png)

![screen shot 2014-05-15 at 1 01 03 pm](https://cloud.githubusercontent.com/assets/1656824/2990052/14ee37e2-dc6c-11e3-83b8-252a882927f3.png)