Adds email confirmation to new account creation.
Adds ability to edit email with confirmation.
Adds password recovery to the login page via a link and modal.
Allows recipient to be specified by email or username, causes form to repopulate if it fails to send, and fixes a bug that prevented sending from the new page.
Hides unconfirmed users and purges them if not confirmed in 7 days.
Removes login button from navbar.
Implements simple_form gem and ensures field highlighting for invalid fields