Minimal working version

* Upgrade dependencies
* Fix ugettext
* Fix bad urls

launderette/models.py

@@ -23,7 +23,7 @@
 #
 
 from django.db import models, DataError
-from django.utils.translation import ugettext_lazy as _
+from django.utils.translation import gettext_lazy as _
 from django.conf import settings
 from django.urls import reverse
 

launderette/views.py

@@ -28,7 +28,7 @@ import pytz
 
 from django.views.generic import ListView, DetailView, TemplateView
 from django.views.generic.edit import UpdateView, CreateView, DeleteView, BaseFormView
-from django.utils.translation import ugettext as _
+from django.utils.translation import gettext as _
 from django.utils import dateparse, timezone
 from django.urls import reverse_lazy
 from django.conf import settings