Show coverage for all patients in Measure view

#### Story ####
- https://www.pivotaltracker.com/story/show/65372354

#### Notes ####
- show coverage for all patients in default rendering on Measure view; this gets overidden when a test patient result is expanded
- when a test patient result is expanded, the coverage section shows a button to return to the coverage for all patients; when test patients are collapsed, a disabled button is rendered
- replace total coverage percentage with a jquery spinner with brand-primary color
- highlight logic view with brand-primary and lighter blue

#### Screenshots ####
- ![overallcoveragedefault](https://f.cloud.github.com/assets/456952/2162520/2ec2f242-94d3-11e3-97e4-4298b2c6ae88.png)
- ![overallcoverageexpanded](https://f.cloud.github.com/assets/456952/2162519/2ec012f2-94d3-11e3-8617-be2c5735d883.png)