Position of ad feature badge

We've removed a line of text from it, so positioning needs adjusting

NB: the line of text will be added back in soon, so then need to revert this PR

### Before

![screen shot 2014-09-24 at 12 58 20](https://cloud.githubusercontent.com/assets/74132/4387797/3948393e-43e2-11e4-9fe9-7d3ea0d631da.png)

### After

![screen shot 2014-09-24 at 12 58 24](https://cloud.githubusercontent.com/assets/74132/4387800/3d8e3c14-43e2-11e4-8eba-df0cb26740ea.png)