Merge branch 'master' of http://git.ispconfig.org/ispconfig/ispconfig3

install/sql/incremental/upd_dev_collection.sql

install/sql/ispconfig3.sql

install/tpl/authmysqlrc.master

interface/lib/classes/auth.inc.php

interface/lib/classes/tform_base.inc.php

interface/lib/lang/de.lng

interface/web/admin/language_add.php

interface/web/admin/language_complete.php

interface/web/admin/language_edit.php

interface/web/admin/language_import.php

interface/web/admin/remote_action_ispcupdate.php

interface/web/admin/remote_action_osupdate.php

interface/web/admin/server_config_edit.php

interface/web/client/client_message.php

interface/web/dns/dns_wizard.php

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

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

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

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

interface/web/sites/templates/web_vhost_domain_redirect.htm