modulestore, in order to separate serializable block data from
out-of-band, non-saved, temporary metadata.

Eliminate the deepcopy causing performance problems with import/export.

https://openedx.atlassian.net/browse/PLAT-416

This fixes two bugs:
1. All statuses were listed as "Unknown"
2. Non-ASCII characters in a header column translation resulted in a 500

updated the failed unit test case and removed the unnessary import

This reverts commit 1d6fceda.

UX-1466

When changing quantities, be sure to return the new CyberSource submit form html. Also, to ensure that any browser content is fully refreshed when clicking the back button, force a page refresh to reset client state

due to expiration.

Respond to review comments:

- Rename build and config files for consistency between lms/studio.
- Fix merge conflicts with lms require config.
- Devstack uses optimized pipeline to skip require JS optimizer step
- Add tests for render_require_js_path_overrides

Enrollment, unenrollment and beta role emails should be rendered in the
student's language, and not the instructor's language.

Fix i18n for video status strings (broken in commit 4b53f4df) and remove
unnecessary complexity from a test case. This also removes the status
whitelist in the video upload configuration. Because status is included
in the CSV report, it is not necessary to filter the included videos by
status.

TNL-1142

of asset metadata in both the old Mongo and Split modulestores.

Several IE bugs have been fixed in 2.4.