* Preventing negative counter in schema.
* Adding viewmodel for admin/bookings/index.
* Simplifying CoursesTermViewModel.js observeables.
* Counting attendee count in CoursesTermViewModel.js dynamically only for 'confirmed' attendees.
* Admin can now book people properly with auto-complete + dynamically loaded invoice address.
* Some UI cleanups.
* Adding courses overview to the login page. Allow for that ajax request without login in /bookings/index.json.