Football score autoupdate

As per request, scores on [match summaries at the top of pages](http://www.theguardian.com/football/2014/may/11/liverpool-v-newcastle-united-premier-league-title-race-live-football) now autoupdate when the blog is live (which generally corresponds with the match).

![Whammo](http://a.gifb.in/122011/1323369219_bicycle_kick_goal.gif)
This matches LiveBlog.