allow to pass customfields to person list widget

Widget/PersonListWidgetFactory.php

@@ -39,7 +39,13 @@ class PersonListWidgetFactory extends AbstractWidgetFactory
         $node->scalarNode('filtering_class')
                 ->defaultNull()
                 ->end();
-            
+        $node->arrayNode('custom_fields')
+                ->prototype('scalar')->end()
+                ->info("Add some custom field to the view. Add the slug of some custom field"
+                        . " if you want to override the view and show their value in the list")
+                ->example(array("custom-field-slug-1", "custom-field-slug-2"))
+                ->cannotBeEmpty()
+                ->end();
     }
         
     public function getAllowedPlaces()