Upgrade django_nose to 1.2
Merge pull request #3204 from edx/db/upgrade-django-nose

Upgrade django_nose to 1.2
Updating acceptance test to really get several videos on
one tab.
Adding before and after screenshots.
Fixing bug.
Added decorator to all functions.
Update.

1.) Renamed print_jpg to capture_screenshot.
2.) Added a global switch to enable/disable functionality.
Working.
Fixing bug.
Work.
Work.
Work.
Work.
Work.
Work.
Done! ^_^
Done! ^_^