Making tests work by calling django.setup() before attempting to run them.
Renaming overrides of ModelAdmin.queryset to be get_queryset(). The old name is deprecated.
Creating a OtreeConfig class to work with django's 1.7 app registry.
Referencing Session model directly without using the app_label.
Setting up signals in AppConfig instance.
Assigning default value to tests.FormFieldModel.boolean field like suggested by django's system checks.