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/Infrastructure/Identity/ApplicationUser.cs

@@ -1,6 +1,5 @@
 using Microsoft.AspNetCore.Identity;
 
-
 namespace Infrastructure.Identity
 {
     public class ApplicationUser : IdentityUser