II Frontend - Orders

[kati-unu]

As a User I want to see my cart and orders:

Implementation:

• write a component for a single order's data
• Display the single order component when the url matches /orders/:orderId **
• Display the cart (using the single order component with the current user's in-progress order. Use the api call GET /orders/cart) when the url matches /cart *
• Add "view cart" button to the navbar that can be used to navigate to the /cart route *