Short names on wallchart

[For the wallchart](http://www.theguardian.com/football/world-cup-2014/overview)
* Abbreviate football teams on fixture
* Ellipsis long team names else where
* Fix playoff / final `:hover` overlapping issue

![names-abbr](https://cloud.githubusercontent.com/assets/31692/2970215/70c4dc84-db58-11e3-8fd3-905ddbbdae20.png)
![names-overlap](https://cloud.githubusercontent.com/assets/31692/2970216/70c51334-db58-11e3-8b07-0c2574bdcade.png)

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![Amazing](http://fc09.deviantart.net/fs70/f/2010/271/8/e/lollipop_animation__by_lonewolf_faraway-d2znbp9.gif)