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

install/dist/lib/opensuse.lib.php

install/dist/tpl/gentoo/apache_apps.vhost.master

install/dist/tpl/gentoo/apache_ispconfig.vhost.master

install/sql/incremental/upd_0068.sql

install/sql/incremental/upd_0069.sql

install/sql/ispconfig3.sql

install/tpl/apache_apps.vhost.master

install/tpl/apache_ispconfig.vhost.master

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

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

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

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

interface/web/sites/templates/cron_edit.htm

server/conf/apache_apps.vhost.master

server/conf/vhost.conf.master

server/lib/classes/cron.d/100-monitor_disk_usage.inc.php

server/lib/classes/cron.d/200-logfiles.inc.php

server/plugins-available/cron_plugin.inc.php