Merge pull request #11712 from mitocw/enhancement/aq/prevent_ccx_creation_if_CCXConnector_is_set_mitocw#189

Prevented creation of new CCX in lms, when a CCXConnector URL is set on a course

Remove the certificate generation button from progress page for audit student

MA-2164 cleaning up old lettuce

Upgrade Underscore.js and Underscore.string.js

Clear out usages of deprecated vendor prefixes.

MA-2164 adding youtube url to encoded videos

Partially covered in bokchoy at lms/test_lms_instructor_dashboard.py:DataDownloadsTest 

Covered in bokchoy at studio/test_import_export.py:TestCourseBadExport 

Partially covered in bokchoy at studio/test_studio_course_create.py:CreateCourseTest 

Partially covered in bokchoy at studio/test_studio_container.py:EditContainerTest and studio/test_studio_container.py:DisplayNameTest

Testing feature file

FED-68

Release

Revert "Make Capa problems do initial load without AJAX."

Fixed accessibility issues with password reset

ECOM-3938

Update translations (autogenerated message)

This reverts commit 9984bbc2.

Create a third shard for lms unit tests.

Update problem-builder to version 2.0.3

This will leverage the nose attrib plugin to allow us
to break tests apart on our build system to run
in parallel on separate nodes.

Merge release back to master.

FEDX-24

Upgrade RequireJS

Revert "ziafazal/WL-328: Multi-Site Comprehensive Theming"

Accessibility fixes for the course home page.

FEDX-105

Release Candidate rc/2016-03-16

Use is-hidden instead of hidden for video errors.