Several updaes and bugfixes.

install/dist/conf/debian40.conf.php

install/install.php

install/lib/installer_base.lib.php

install/sql/ispconfig3.sql

install/tpl/apache_ispconfig.vhost.master

install/tpl/config.inc.php.master

install/tpl/pureftpd_mysql.conf.master

interface/web/monitor/system.php

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

interface/web/sites/ftp_user_edit.php

interface/web/sites/templates/ftp_user_advanced.htm

interface/web/sites/templates/ftp_user_edit.htm

server/plugins-enabled/apache2_plugin.inc.php