Merge pull request #3994 from florianbeer/debug

Debug

html/includes/vars.inc.php

@@ -28,7 +28,7 @@ foreach ($segments as $pos => $segment) {
     else {
         list($name, $value) = explode('=', $segment);
         if ($value == '' || !isset($value)) {
-            $vars[$name] = yes;
+            $vars[$name] = 'yes';
         }
         else {
             $vars[$name] = $value;

includes/device-groups.inc.php

@@ -25,8 +25,6 @@
  * @subpackage Devices
  */
 
-include_once($config['install_dir'].'/includes/common.inc.php');
-
 /**
  * Add a new device group
  * @param $pattern