CRM-12509 default custom group api to is_active =1

api/v3/CustomGroup.php

@@ -93,6 +93,7 @@ function _civicrm_api3_custom_group_create_spec(&$params) {
   $params['extends']['api.required'] = 1;
   $params['title']['api.required'] = 1;
   $params['style']['api.default'] = 'Inline';
+  $params['is_active']['api.default'] = 1;
 }
 
 /**