no-jira: instant update of the menu tree after changes in the tools (to make Joel happy)

src/main/java/org/olat/group/ui/edit/BusinessGroupEditController.java

@@ -264,6 +264,7 @@ public class BusinessGroupEditController extends BasicController implements Cont
 				// notify current active users of this business group
 				BusinessGroupModifiedEvent
 						.fireModifiedGroupEvents(BusinessGroupModifiedEvent.CONFIGURATION_MODIFIED_EVENT, currBusinessGroup, null);
+				fireEvent(ureq, event);
 			}
 		} else if (source == alreadyLockedDialogController) {
 			//closed dialog box either by clicking ok, or closing the box