add logout, primarily\ for dev purposes

shiftregister/app/urls.py

@@ -5,4 +5,5 @@ from . import views
 urlpatterns = [
     path('', views.index, name='index'),
     path('login/<slug:token>', views.login, name='token_login'),
+    path('logout', views.logout, name='token_logout'),
 ]

shiftregister/app/views.py

@@ -20,3 +20,7 @@ def login(request, token):
         tk.helper.save()
     request.session['token'] = token
     return redirect('index')
+
+def logout(request):
+    del request.session['token']
+    return redirect('index')