The password input was shown in the popup menu when passwords were not
enforced, or when they were enforced but no password was set, which
prevented updating/changing the password once set. As the password input
should be shown too when password are enforced and a password is set no
condition is needed, so now the password input is always shown.

Signed-off-by: Daniel Calviño Sánchez <danxuliu@gmail.com>