From login page, user is going to registration form and enters his/her
e-mail address, registration number (or personal code) and selects
account type. If a user with same data already in the system, e-mail
with password recovery information will be sent to all specified
address. If account is registered to a several address, each of them
will get same letter. The letter will list the names of the user, and
links for each of them.