Loads the plugin

        :raises: errors.PluginInitError

def _load(self, ):
        """Loads the plugin

        :raises: errors.PluginInitError
        """
        super(JB_MayaPlugin, self)._load()
        try:
            if not jukeboxmaya.STANDALONE_INITIALIZED:
                self.init_ui()
        except Exception:
            log.exception("Load Ui failed!")