This reverts commit e58e295c.

This is to fix learner-1464

Planning Prompts experiment: exclude non-English courses

LEARNER-1297: Updating date formatting in course home page.

Add comment to save future self time.

Remove extra div.

Return only error value to students when codejail raises an exception

2) Updating the course experience sass file to use variables it can reference in the version two variable sass file.
3) Updating date styling on course home page as explained in LEARNER-1297.
4) Expanding side outline panel to take up a third and not a quarter of the content size.

EDUCATOR-394 disable self-generated certificates when course is reset to instructor-paced

Remove skip from test where failure cannot be reproduced

Planning Prompts experiment: check content availability date

Merge pull request #15319 from edx/revert-15163-ri/EDUCATOR-394-disable-self-generation-certificates

Revert "EDUCATOR-394 Disable self generation certificates when course is reset to instructor-paced."

ENT-368 Hide Register or Sign In links in Header on Logistration

Revert "EDUCATOR-394 Disable self generation certificates when course is reset to instructor-paced."

EDUCATOR-394 Disable self generation certificates when course is reset to instructor-paced.

EDUCATOR-294 – Fix studio header menu

remove comment for translators

inst.args[0] is more reliable than inst.message

consistent escaping

Enable course search for the unified course experience

Add comments around In-course verification prompt throwaway code

DOC-3687: Change help target for enrollment track groups on Studio Group Configs page

LEARNER-1112

Added course level lang attribute for LMS WIP 

Test passed > 130 times. Perhaps
querying for the content changes timing.

Update Studio help tokens following doc reorg for Publisher

Added course level lang attribute for LMS

added lang attribute to Studio

fixed error when trying to get language attribute on course that does not exist

simplified code

added lang attribure to more places in LMS, added migration for language attribute in course_overview

fixing contraints in the database for language attribute

added lang attribute to several more places in LMS and Studio

added lang attribute to discussion and custom pages; cleaned up code

fixed issue that was causing test failures

moved lang attribute higher in tree in two places

[DELAY MERGE] TNL-6319: Upgrade edx-search for ES 1.x upgrade.

edx-ora2 1.4.2 release

This reverts commit 8ca5c11a, reversing
changes made to 1acb5155.

Open Response Assessment tab for Instructor Dashboard - bugfix (prevent loading ORA Block more than one time)