Acceptance test for displaying the period estimate

We are just getting started, son
Removed more unnecessary files for testing
Moved div for period estimates to a component
More removal of stuff
Initial component for specifying the period's estimate
Removed the use of the index route in place of a week route
Removed an unused demo component
Move the period estimate to the week template
Removed the unnecessary component
Find a period by it's week identifier
Convert application adapter to coffeescript
Converted the api-stubs to coffeescript
Period.Week defined as a number
Route finds one period record by week number as the id
Simulate the server with the Fixture adapter so that it finds periods by weeks instead of ids
Extended DS.Store to add a `findOrInitialize` method
Cleaned up the code
Duplicate what the RestAdapter would return for an error so it works
with the store `findOrInitialize`
Change model to use findOrInitialize to create a model if one does not exist
Week renders with a new period