added mail_box

interface/lib/classes/tform.inc.php

interface/lib/classes/tform_actions.inc.php

interface/sql/ispconfig3db.sql

interface/web/sites/form/mail_box.tform.php

interface/web/sites/lib/lang/en_mail_box.lng

interface/web/sites/lib/lang/en_mail_box_list.lng

interface/web/sites/lib/module.conf.php

interface/web/sites/list/mail_box.list.php

interface/web/sites/mail_box_del.php

interface/web/sites/mail_box_edit.php

interface/web/sites/mail_box_list.php

...rface/web/sites/templates/mail_box_autoresponder_edit.htm

interface/web/sites/templates/mail_box_list.htm

interface/web/sites/templates/mail_box_mailbox_edit.htm

interface/web/themes/default/style.css