Decrease the type-size of long titles

This decreases the font-size of the page title on the policy#show page and show with member page to match divisions#show. There's also special treatment for the /person page which has a very long title compared to other section headings.

## After:

![screen shot 2014-10-17 at 3 56 26 pm](https://cloud.githubusercontent.com/assets/1239550/4674825/054f7b92-561b-11e4-9255-08169a0ecb97.png)
![screen shot 2014-10-17 at 3 46 46 pm](https://cloud.githubusercontent.com/assets/1239550/4674827/075f6c30-561b-11e4-9be1-fc0ecabc38d9.png)
![screen shot 2014-10-17 at 4 32 40 pm](https://cloud.githubusercontent.com/assets/1239550/4674847/6aa141ba-561b-11e4-8012-f69e0e6ed187.png)
![screen shot 2014-10-17 at 4 34 28 pm](https://cloud.githubusercontent.com/assets/1239550/4674854/84526f12-561b-11e4-9e36-59599102349e.png)


## Before:

![screen shot 2014-10-17 at 3 56 48 pm](https://cloud.githubusercontent.com/assets/1239550/4674821/faff66d4-561a-11e4-9fc8-b2b937a04383.png)
![screen shot 2014-10-17 at 4 32 58 pm](https://cloud.githubusercontent.com/assets/1239550/4674849/6de14d8e-561b-11e4-8b86-985413b76335.png)
![screen shot 2014-10-17 at 4 34 37 pm](https://cloud.githubusercontent.com/assets/1239550/4674856/8c4337a6-561b-11e4-981e-c1f6458c0e4e.png)