Added function "is_superadmin" in auth library and improved other functions.

Till Brehm

2014-08-13 19b5e01da02aa2115ee802cf2e43a7f3e58f4eac

 interface/web/mail/lib/lang/it_mail_mailinglist.lng

@@ -18,4 +18,5 @@
$wb['password_match_txt'] = 'The passwords do match.';
$wb['listname_error_unique'] = 'There is already a mailinlist with name on the server. Please choose a different listname.';
$wb['email_error_isemail'] = 'Email address is invalid.';
$wb['mailinglist_txt'] = 'Mailing list';
?>