Adding 2FA Authenticator Support (#66)

* Adding support for 2fa, more auth options

* WIP getting auth stuff working

* Added Manage views. 2FA working now for MVC app.

* Switching to using a controller for no-UI logout scenario

* Adding Razor Pages impl of 2FA auth stuff. Works.

src/WebRazorPages/Startup.cs

@@ -3,6 +3,7 @@ using ApplicationCore.Services;
 using Infrastructure.Data;
 using Infrastructure.Identity;
 using Infrastructure.Logging;
+using Infrastructure.Services;
 using Microsoft.AspNetCore.Builder;
 using Microsoft.AspNetCore.Hosting;
 using Microsoft.AspNetCore.Http;
@@ -100,6 +101,7 @@ namespace Microsoft.eShopWeb.RazorPages
             services.AddSingleton<IUriComposer>(new UriComposer(Configuration.Get<CatalogSettings>()));
 
             services.AddScoped(typeof(IAppLogger<>), typeof(LoggerAdapter<>));
+            services.AddTransient<IEmailSender, EmailSender>();
 
             // Add memory cache services
             services.AddMemoryCache();