Added test for OpenAssessmentBlock mixin.
TNL-1022
update ora version
Merge pull request #6291 from edx/hotfix/2014-12-17

Hotfix/2014 12 17
Tender widget inavailability stops loading studio page

When tender_widget.js is inavailable studio page stops
loading becuase of error in the requirejs. It is
dependency in the requirejs so when it doesn't load
it cause other dependencies to stop loading.

TNL-1018