Clarify and standardize the header links
Improve site styling and layout of the CSS rules
Don't require a date when editing checkouts
Add braces as a dependency (hooray mixins!)
Move 'login required' from urlconf to views
Make date field 'hidden' but don't remove it
Sync initial migration with date field change
Remove 'date' checks from Checkout model tests
Don't worry about the date field on Checkouts