Set sizing of summary bar li's

Before:

![before](https://cloud.githubusercontent.com/assets/744212/2539142/386d2232-b5c5-11e3-9256-76e1f0713283.png)

After:

![after](https://cloud.githubusercontent.com/assets/744212/2539146/3b6c5980-b5c5-11e3-895e-fa5c4573ff85.png)

Mobile:

![mobile](https://cloud.githubusercontent.com/assets/744212/2539153/4e40b506-b5c5-11e3-9005-d1cbcd84ab2d.png)