Prototype the home index view.
Model the data for the home index.

This includes creating the view models as well as mapping the work item
history table (or as much of it as is needed for this) as well as
creating test data for the histories.
Update Home controller.

The index now gets all of the data required to fill in the data
as outlined in the prototype.
Create the home index view.
Merge branch 'feature/BurndownOnHomePage' into develop