CentOS 7.2 related fixes in installer and apache vhost template.

Till Brehm

2016-06-22 2b3dfac5e54e56fa05f98cb00d1df42110d6b896

 interface/web/admin/lib/lang/de.lng

@@ -47,4 +47,6 @@
$wb['Remote Actions'] = 'Wartung';
$wb['Do OS-Update'] = 'Betriebssystem Update';
$wb['Do ISPConfig-Update'] = 'ISPConfig Update';
$wb['Sites'] = 'Sites';
$wb['DNS'] = 'DNS';
?>