public SignInController(ISubscriptionRepository subscriptionRepository, IFormsAuthenticator formsAuthenticator)
 {
     _subscriptionRepository = subscriptionRepository;
     _formsAuthenticator = formsAuthenticator;
 }
 public SignInController()
 {
     _subscriptionRepository = new SubscriptionRepository(MongoServer.Create().GetDatabase("blog"));
     _formsAuthenticator = new FormsAuthenticator();
 }