Sidebar Overhaul

This PR overhauls how the sidebar in Exchange and the Global Domain report looks.

It adds:
* A new UI that allows for grouped facets
* Doesn't cause a reload everytime a facet is checked, but instead leverages an "Apply" button so users can choose multiple facets before fetching the page
* Allows a user to expand and close both facets and groups
* Ability to define human readable names for facets and their choices
* Adds support for nested special types in generating ES mappings

![screen shot 2013-07-11 at 12 36 27 pm](https://f.cloud.github.com/assets/1201876/783118/1a7ad420-ea48-11e2-94be-cfdb7de03306.png)