Patient builder scrolling

## Story
* https://www.pivotaltracker.com/story/show/62488424

## Notes
* Uses the bootstrap affix plugin to pin the selected sections to the top when you scroll a certain distance down the page.. see changes in patient_builder.js.coffee
* Includes an update of our custom jquery UI to 1.11.1

Sorry for so many commits ... I think I rebased in a non-ideal way somewhere