Updated navbar and user rating

(Jason)
Updated after much cannibalism.

Updated to have new Navbar with User Rating percentage and logout button
Nav bar / logout has new styling.

Finally got this done after tackling the modal pop up which is now abandoned.
![giphy](https://cloud.githubusercontent.com/assets/5184687/3319099/eea786ee-f71c-11e3-9c1c-1a0d5e3b28e0.gif)