Store the user's application's datastore key instead of the application itself.
Construct salt out of user's creation time, their last name, and their email.
Add pending test for setting the user's application's datastore key.
Add pending test for sending me an email with user's info on registration.
Add an Approved field to users.
Lots of changes on airplane. Properly set up user and application creation (I hope!).
Add GitHub and Twitter fields.
Send email to me upon registration.
Send email to user upon registration.