private function isGroupEditable(class_module_user_group $objGroup)
 {
     //validate possible blocked groups
     $objConfig = class_config::getInstance("blockedgroups.php");
     $arrBlockedGroups = explode(",", $objConfig->getConfig("blockedgroups"));
     $arrBlockedGroups[] = class_module_system_setting::getConfigValue("_admins_group_id_");
     $bitRenderEdit = class_carrier::getInstance()->getObjSession()->isSuperAdmin() || $objGroup->rightEdit() && !in_array($objGroup->getSystemid(), $arrBlockedGroups);
     return $bitRenderEdit;
 }