Add world cup to nav

Adding World Cup to both Sport and Football Navigation

![image](https://cloud.githubusercontent.com/assets/796176/3103728/848b68a6-e65b-11e3-99db-00a81beb41d0.png)

![image](https://cloud.githubusercontent.com/assets/796176/3103759/ff98e956-e65b-11e3-87b1-c73279e68c50.png)

![](http://stream1.gifsoup.com/view1/4701510/archie-gemmill-scotland-o.gif)