Reduce division title size

After:
![screen shot 2014-10-06 at 3 52 10 pm](https://cloud.githubusercontent.com/assets/1239550/4521564/1832b74c-4d15-11e4-84df-3864202e429e.png)
![screen shot 2014-10-06 at 3 52 22 pm](https://cloud.githubusercontent.com/assets/1239550/4521569/4bb120c2-4d15-11e4-9fa5-9d220e7655aa.png)

Before:
![screen shot 2014-10-06 at 3 55 11 pm](https://cloud.githubusercontent.com/assets/1239550/4521565/1b8bbbf0-4d15-11e4-8f0e-55fd8481d7c4.png)
![screen shot 2014-10-06 at 3 55 38 pm](https://cloud.githubusercontent.com/assets/1239550/4521570/560eaf1c-4d15-11e4-9351-f0259edddd10.png)

Exposes a bit of an issue with the size of the 'summary title' but really the problem is those display-navigation tabs.

closes #582