Fix configforms tests on Django 1.8+
Review Request #7919 — Created Jan. 29, 2016 and submitted
The setUpClass method was missing a super() call and so the class wasn't
being properly instantiated, leading to errors when it was being torn
down. This patch fixes that.
Ran unit tests on Django 1.6 and 1.8; they passed in both cases.
Tool: Pyflakes Processed Files: djblets/configforms/tests.py Tool: PEP8 Style Checker Processed Files: djblets/configforms/tests.py