fix exception in list.renderView() introduced by adding debouncer.run()

Use arrow function to keep "this" at the same value it has in render().

webroot/js/view/list.js

@@ -407,7 +407,7 @@ export class ListView extends View {
 	}
 
 	render () {
-		this.debouncer.run(this.renderView);
+		this.debouncer.run(() => { this.renderView(); });
 	}
 
 	renderView () {