Fix logos on interactive pages 

They need a width

### Before

![screen shot 2014-12-19 at 11 58 33](https://cloud.githubusercontent.com/assets/74132/5504048/72c3b08a-8776-11e4-88ad-1f9bcf7c4e69.png)

### After

![screen shot 2014-12-19 at 11 58 25](https://cloud.githubusercontent.com/assets/74132/5504053/770a12b0-8776-11e4-989c-3bacacdf1c70.png)