Co-authored-by: SaadYousaf <saadyousaf@A006-00314.local>

[TSD] Annotate relative_dates waffle flag

* Add toggle and settings annotations for CCX

Co-authored-by: Robert Raposa <rraposa@edx.org>

exp: Add logging to course cert availability date

I believe there to be a race condition here that only manifests in a
non-devstack environment. Adding some logging to better diagnose.

Reverts #26731

The code in common/lib/capa/capa/safe_exec needs
to remain Python 3.5-compatible, since edx-sandbox
(ie codejail) is still running Python 3.5.

AA-513: Reset segment state if anon user and there is a segment user id

[TSD] add annotations for ENABLE_DISCUSSION_HOME_PANEL feature flag

Update edX-hosted video player to use 2x playback speed

This will make it possible to make a New Relic dashboard for the
learning_sequences API calls that tracks call performance across
different transactions (by querying Spans). Our goal would be to
offer SLAs around 99th percentile performance.

Course IDs and User ID metrics are also added, so that we can see
outliers in Span reporting, for later investigation.

LEARNER-8247

Co-Authored-By: Sarina Canelake <sarina@edx.org>

* added iframe mfe overrides

* Added import to rtl

* Refactored

* Added comment

MICROBA-1025 | Update cert_whitelist management command

* refactor: pyupgrade in common/lib/xmodule

Co-authored-by: Usama Sadiq <usama.sadiq@arbisoft.com>

* refactor: pyupgrade on common/lib

Co-authored-by: Usama Sadiq <usama.sadiq@arbisoft.com>

pyupgrade in calendar-sync. 

= IMPORTANT WARNING =

This can be a VERY EXPENSIVE MIGRATION which may take hours or
days to run depending on the size of the courseware_studentmodule
table on your site. Depending on your database, it may also lock
this table, causing courseware to be non-functional during that
time.

If you want to run this migration manually in a more controlled
way (separate from your release pipeline), the SQL needed is:

  CREATE INDEX `courseware_stats` ON `courseware_studentmodule`
     (`module_id`, `grade`, `student_id`);

You can then fake the migration:
  https://docs.djangoproject.com/en/2.2/ref/django-admin/#cmdoption-migrate-fake

= Motivation and Background =

TLDR: This adds an index that will speed up reports like the
Problem Grade Report. This fixes a performance regression that
was unintentionally introduced in 25da206c.

I'm capturing the entire saga below, in case Open edX operators
need to dig into it.

The tale begins in November o...

Fix button/title text

If we are seeing an anonymous user, but the segment user id is still
set, we believe the segment user id is coming from a different user on
the same machine. This will make sure we clear out that storage and
then the indentify call will make a new anonymous id

1) Account activation email.
2) Password reset email.
3) Password reset success.

VAN-272

[MICROBA-1025]
- Update management command to use the same logic that the Instructor Dashboard uses
- Fix bug in management command where processing stopped when encountering a user that did not exist
- Add more logging
- Add and update tests where needed

Pin diff-cover to fix tests on Ubuntu 20.04

In commit 9b37e7d0, the logic of
`streak_celebration_is_active` was accidentally
changed such that it no longer checks the
Progress Milestones waffle flag.
This commit fixes that.

Note: This also adds in a transitive check to
`courseware_mfe_is_active`,
which makes sense for Streak Celebration
and should not have any functional impact.

Updated drag and drop version

* Adds the backfill_course_outlines management command to contentstore
* Adds a read-only Django admin interface to learning_sequences for the
  support team and debugging.
* Adds two new functions to the learning_sequences public API:
  key_supports_outlines and get_course_keys_with_outlines

The learning_sequences app isn't supposed to know about contentstore or
modulestore, as it's intended to be extracted out of edx-platform in the
long term. Therefore, the backfill_course_outlines command is in
contentstore, and not learning_sequences.

This work was tracked in TNL-7983, but it also fixes a bug where we were
trying to generate course outlines for libraries (TNL-7981).

All Open edX instances upgrading to Lilac should run the
backfill_course_outlines command as part of their upgrade process.

We weren't properly catching the CourseOutlineData.DoesNotExist error
before this commit. TNL-7979

BOM-2352: Removed unused imports from lms/djangoapps/{grades, instruc…

Run Pyupgrade on edxmako.