Password reset refactoring

Changed the password reset flow not to reveal if a user exist or not.
Now supports searching for email, mobile phone number and social security number.
Added translations for the password reset refactoring
Refactoring of outgoing emails and myndighetspost + translations
Removing unused code after the refactoring
Normalize input if the input is an email adress
Added password reset link timeout

- Asking for a new password reset link invalidates (deletes) all previous ones
- Changed text on the password expire page
Merge branch 'password-reset'