Stanford-Online/class2go — pull request #847 by dcadams (2012-09-26 22:22:29+00:00)
Title: Selenium tests, asset additions and fix for #818 (dupe exercises in c2g_exercises)

Most of this in benign. Only real code change is:

courses/videos/forms.py and
courses/problemsets/forms.py

Validators on Add Exercise buttons have been changed to check existence of exercise, whether from video or problemset.