[READY] Better page flow hittest

A quick modification to the `#page-flow` element to make it easier to click.

Before:
![before](https://f.cloud.github.com/assets/2076731/2233678/03e97c52-9b2d-11e3-8583-e208688d00e8.png)

After:
![after](https://f.cloud.github.com/assets/2076731/2233680/0b766638-9b2d-11e3-918c-ac50be8ace91.png)