fix enrollment issue in instructor dash (ECOM-776)
variable name error

The variable name --- `dist` error
`dist` = {}  will cover `dist = grades.answer_distributions(course.id)`
fix preview link generation for course reruns (PLAT-336)
Add back end for Studio video upload feature

This feature allows upload of video assets to S3. This requires that the
VIDEO_UPLOAD_PIPELINE setting be properly configured and that each
course be configured with a token issued by the media team for their
processing purposes (e.g. linking the video with a YouTube channel).

Co-authored-by: Greg Price <gprice@edx.org>
Add front end for Studio video upload feature

Co-authored-by: Chris <crodriguez@edx.org>
Co-authored-by: Mark Hoeber <hoeber@edx.org>
Studio video upload feature template and styling

Co-authored-by: Greg Price <gprice@edx.org>
also apply sorting rules overrides to the /courses view
Merge pull request #6257 from edx/mobile/video-pipeline-squashed

Add video upload feature to Studio
Merge pull request #6262 from edx/cdodge/also-sort-in-courses-list

also apply sorting rules overrides to the /courses view
Update translations (autogenerated message)
Merge pull request #6265 from edx/sarina/2014-12-15-translations-updates

Update translations (autogenerated message)
optionally using environment variable for edx-platform hash
Add tracking for refunds.
Add the activate account step to the verified workflow.

Changing approach such that email activation is not a step.

Removing stale line of code.

Update activate account step according to new UI changes.

Adding new test for activation.
Return empty values and log a warning instead of raising NotImplemented
exceptions for XML modulestore asset metadata methods.
Export modulestore-stored asset metadata as XML to exported course.
Import asset metadata XML into modulestore.
Optimize importing many items of asset metadata by avoiding multiple
round-trips to MongoDB.
Add wrapper class that enables storage of Mongo document id separately
from dictionary of all asset metadata by asset type.
Update to the latest lettuce and install from pypi
Remove Segment events from courseware.
Merge pull request #6261 from edx/sanchez/add-activate-account

Add the activate account step to the verified workflow.