Fix width of Logout element

Before:
![before](https://f.cloud.github.com/assets/245432/2319727/c5608a8a-a382-11e3-8eaf-e2659f5cda36.png)
After:
![after](https://f.cloud.github.com/assets/245432/2319726/c3b1ebca-a382-11e3-8c30-c6cc15fe9aee.png)