Remove [Required] from the Order model to fix a test failure

src/MusicStore/Models/Order.cs

@@ -16,7 +16,6 @@ namespace MusicStore.Models
         public System.DateTime OrderDate { get; set; }
 
         [BindNever]
-        [Required]
         [ScaffoldColumn(false)]
         public string Username { get; set; }
 

src/MusicStore/Views/Checkout/AddressAndPayment.cshtml

@@ -15,6 +15,8 @@
 {
     @Html.AntiForgeryToken()
     <h2>Address And Payment</h2>
+    <hr />
+    @Html.ValidationSummary(true, "", new { @class = "text-danger" })
     <fieldset>
         <legend>Shipping Information</legend>