Various live-blog fixes


- Wrap block timestamps in anchor to enable deep linking
- Fix key events hover underline styling on mobile breakpoints
- Fix bottom margin on football scores component
- Ensure clicking on key event pushes state to browser history and url hash
- Fix display of live filter bar

## Bugs
![screenshot from 2014-05-02 09 37 23](https://cloud.githubusercontent.com/assets/80089/2860886/6981b0be-d1d5-11e3-8c0d-26217081999e.png)

![screenshot from 2014-05-02 09 41 00](https://cloud.githubusercontent.com/assets/80089/2860894/8125ec26-d1d5-11e3-844a-d6a8c76a8412.png)

![screenshot from 2014-05-02 09 54 39](https://cloud.githubusercontent.com/assets/80089/2860997/781fcd7a-d1d7-11e3-825f-a86642be8d4b.png)