Merge branch 'stable-3.1'

Marius Burkard

2016-07-10 e1ceb050e19c7574bca146a8da7047ee4ff456b5

 server/plugins-available/apache2_plugin.inc.php

@@ -884,7 +884,7 @@
         }
            
          // get the primitive folder for document_root and the filesystem, will need it later.
          $df_output=explode(" ", exec("df -T $document_root|awk 'END{print \$2,\$NF}'"));
          $df_output=explode(" ", exec("df -T " . escapeshellarg($data['new']['document_root']) . "|awk 'END{print \$2,\$NF}'"));
          $file_system = $df_output[0];
          $primitive_root = $df_output[1];