/**
  * Constructor
  *
  * @param $app the application instance (db handle + log method)
  * @param $interface_mode act in interface (true) or server mode (false)
  */
 public function __construct($app, $interface_mode = false)
 {
     parent::__construct($app, 'APS installer: ', $interface_mode);
 }
 /**
  * Constructor
  *
  * @param $app the application instance (db handle)
  */
 public function __construct($app)
 {
     parent::__construct($app);
 }