cs: Enable a couple of risky rules.

src/Bundle/ChillCustomFieldsBundle/Entity/CustomFieldsGroup.php

@@ -104,7 +104,7 @@ class CustomFieldsGroup
 
             foreach ($this->customFields as $cf) {
                 if ($cf->isActive()) {
-                    array_push($this->activeCustomFields, $cf);
+                    $this->activeCustomFields[] = $cf;
                 }
             }
         }