Enhance product detail handling by integrating komponenten data into relevant components. Updated AddToCartButton, CartItem, Product, and ProductDetailPage to support new komponenten properties, improving product representation and pricing logic. Updated 404 image asset for better user experience.

src/components/AddToCartButton.js

@@ -58,6 +58,7 @@ class AddToCartButton extends Component {
         vat: this.props.vat,
         versandklasse: this.props.versandklasse,
         availableSupplier: this.props.availableSupplier,
+        komponenten: this.props.komponenten,
         available: this.props.available
       });
     } else {