Refactor UI tests to be simpler
Update to the latest version of Django Hstore

Both of the changes made in our fork have been accepted upstream.
Merge pull request #1690 from steventlamb/topic/refactor_ui_tests

Refactor UI tests to be simpler
Merge pull request #1692 from maurizi/update-django-hstore

Update to the latest version of Django Hstore
Don't create tree when udfc data is empty

fixes #1077 on github