Correct styling on all advertisement feature content types

Mainly around font used

### Before

![screen shot 2014-11-19 at 14 36 30](https://cloud.githubusercontent.com/assets/74132/5107436/affa3e72-6ff9-11e4-81f8-afc1d8ad7b66.png)

### After

![screen shot 2014-11-19 at 14 36 24](https://cloud.githubusercontent.com/assets/74132/5107439/b50102fc-6ff9-11e4-98ba-bd67e0606d70.png)