Fix article head regressions

- Fixes layout for comments, expired content, interactives, top stories (fixes #2017)
- BEMification of headline lists: most read, most popular (Still needs fragment refactoring, now made easy thanks to the class names).


### Note: interactive's date is before the headline

![screen shot 2013-10-16 at 17 36 13](https://f.cloud.github.com/assets/85783/1345317/e2ee0698-368d-11e3-8dd9-467ad23e2233.PNG)


![ ](http://i.imgur.com/HMiTx9s.gif)