Make it more Liverpool-centric and compelling

- Change the structure so it's all about Liverpool.
- Put Liverpool in the navbar
- Add a b&w background theme of the three graces
- Change the styling a bit so the navbar is black and white
- Added some call-to-actions to contribute restaurant reviews
Merge pull request #10 from paulfurley/make-it-more-liverpool-centric

Make it more Liverpool-centric and compelling