Wider touch area

Wider touch area for the settings icon, in mobile view.

Touch area before:
![before](https://f.cloud.github.com/assets/5294234/1045441/0e49217c-1025-11e3-97fb-8dca793bd726.jpg)

Touch area after:
![after](https://f.cloud.github.com/assets/5294234/1045443/18efdf76-1025-11e3-84ba-41dda6a9b1d7.jpg)