overhauled registry

src/main/java/de/srsoftware/web4rail/actions/FinishRoute.java

@@ -15,4 +15,9 @@ public class FinishRoute extends Action {
 		if (isSet(route)) route.finish();
 		return true;
 	}
+	
+	@Override
+	protected void removeChild(BaseClass child) {
+		// this class has no child elements		
+	}
 }