honor autopasswd setting for resend password

When autopasswd is disabled, the resend password option now asks for a
new password instead of autogenerating a new one and sending it by mail.

Note to translators: the wording for btn_resendpwd and resendpwd changed
to be more universal. English and German language files where updated -
other languages need to be adjusted.

Conflicts:

	inc/lang/en/lang.php