When user setup base info and new password, it changes status to DONE.
When user opened invitation email, it changes status to EMAIL_OPENED.
When system succesfully sent invitation email to the user, it changes status to EMAIL_SENT.
When something wrong, it changes status to ERROR.
When user clicked on invitation link, it changes status to LINK_OPENED.
When user successfully logged in first time, it changes status to LOGGED_IN.
When user created during invitation, it has status PENDING.
When user is invited to the system, it has one of the following statuses: