Minimal working version

* Upgrade dependencies
* Fix ugettext
* Fix bad urls

accounting/views.py

@@ -25,7 +25,7 @@
 from django.views.generic import ListView, DetailView
 from django.views.generic.edit import UpdateView, CreateView, DeleteView, FormView
 from django.urls import reverse_lazy, reverse
-from django.utils.translation import ugettext_lazy as _
+from django.utils.translation import gettext_lazy as _
 from django.forms.models import modelform_factory
 from django.core.exceptions import PermissionDenied, ValidationError
 from django.forms import HiddenInput