More concise clinical elements

## Stories

* https://www.pivotaltracker.com/story/show/77141196
* https://www.pivotaltracker.com/story/show/75543658
* https://www.pivotaltracker.com/story/show/75515126

## Notes

* Collapses the other groups when expanding one set of elements
* Highlights differences between similar clinical elements

## Screenshots

![image](https://cloud.githubusercontent.com/assets/2136286/3968331/d58f13ec-27b5-11e4-9f8e-7ba61c98173f.png)

![image](https://cloud.githubusercontent.com/assets/2136286/3968339/e151468c-27b5-11e4-81b0-3c6fa65c6f5b.png)