Added allowempty setting to ISEMAIL validator.

Till Brehm

2016-01-29 a8ab61eeb0beac52d5a1e8c41d549df4ed87bf71

 interface/web/tools/lib/lang/id.lng

@@ -9,4 +9,5 @@
$wb['Import'] = 'Import';
$wb['ISPConfig 3 mail'] = 'ISPConfig 3 mail';
$wb['PDNS Tupa'] = 'PowerDNS Tupa';
$wb['Interface'] = 'Interface';
?>