Merge branch 'develop' into '6497_php_sort_version_3'

helper_scripts/multifile_add

install/sql/incremental/upd_dev_collection.sql

install/sql/ispconfig3.sql

install/tpl/debian6_dovecot-sql.conf.master

install/tpl/debian_dovecot-sql.conf.master

install/tpl/fedora_dovecot-sql.conf.master

install/tpl/opensuse_dovecot-sql.conf.master

interface/lib/classes/dns_wizard.inc.php

interface/lib/classes/remote.d/dns.inc.php

interface/lib/classes/tools_sites.inc.php

interface/web/client/form/client.tform.php

interface/web/client/templates/client_edit_address.htm

interface/web/dns/dns_wizard.php

interface/web/mail/form/mail_user.tform.php

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

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

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

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

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

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