Implement login and logout views

siteroot/urls.py

@@ -14,9 +14,12 @@ Including another URLconf
     2. Add a URL to urlpatterns:  path('blog/', include('blog.urls'))
 """
 from django.contrib import admin
+from django.contrib.auth import views as auth_views
 from django.urls import path, include
 
 urlpatterns = [
     path('admin/', admin.site.urls),
+    path('login/', auth_views.LoginView.as_view(redirect_authenticated_user=True), name='login'),
+    path('logout/', auth_views.LogoutView.as_view(), name='logout'),
     path('', include('bookmarks.urls')),
 ]