reinstate more fixtures button on football page

Reinstates broken show more fixtures button here: /football/fixtures. As discussed wtih @cantlin the show less button is nuked

![show-more](https://cloud.githubusercontent.com/assets/986155/4842973/26adb400-602c-11e4-9f49-369db4624f85.png)

I guess, but if this was a link you could follow through to the fixtures page. any reason why it's changed to a `button`?