Introduced ASP.NET Core status code error handling

With the introduction of the new `ErrorController` (e7fe64f), I've introduced the `UseStatusCodePagesWithReExecute()` configuration to the `Host` project.

Author: JeremyCaney

OnTopic.AspNetCore.Mvc.Host/Program.cs

@@ -53,6 +53,7 @@
 }
 else {
   app.UseExceptionHandler("/Home/Error");
+  app.UseStatusCodePagesWithReExecute("/Error/{0}");
   // The default HSTS value is 30 days. You may want to change this for production scenarios, see https://aka.ms/aspnetcore-hsts.
   app.UseHsts();
 }