World cup group table tweaks

As requested from UX and editorial

- Remove group name from all fixtures list
- Add group name to table component

/cc @adamnfish 

#### Before
![google chrome](https://cloud.githubusercontent.com/assets/80089/3269361/f04daaa8-f2eb-11e3-8971-947f478dde48.png)

#### After
![google chrome](https://cloud.githubusercontent.com/assets/80089/3269363/f75cc536-f2eb-11e3-844a-90ea63b8bf07.png)


what you want is...

`group.round.name.orElse(Some(competition.fullName))`