AA-289: rewrite how course updates behave when dismissed

Adding brand-edx.org as a dependency to edx-platform

Set expiration_date field in IDVerificationAttempt model

Previously, dismissing one course update would disable all future
updates. But that feels a bit limiting.

Instead, these are the new rules:
- If the newest update has not been dismissed yet, it gets displayed.
- If the newest update has been dismissed, we display nothing.
- Editing the newest update will cause it to be displayed again.
- New updates get displayed, even if previous updates were dismissed.

This commit includes a light refactoring and addition of some utility
methods to help manage the above.

It also notes that the learning MFE does not use the "latest_update"
waffle option, which controls the labeling of the update message.

ENT-3680: Updated edx-enterprise version and only set user language preference on signup if it does not already exist.

Updated edx-enterprise version and only set user language preference on signup if it does not already exist.

Fix certificate sass assets collection for comprehensive themes

When rolling out #25477, we dropped hundreds of email activation
tasks due to the renaming of student.send_activation_email
to common.djangoapps.student.send_activation_email,
and lost more when we rolled that PR back.
This happens because of blue/green deployment:
old workers are still online for a while after deploying,
so there is a period of time when the task names are mismatched.

To prevent this from happening again, this will make
it so the import changes don't change the names of
any of the Celery tasks.

Revert "Set expiration_date field in IDVerificationAttempt model"

AA-422: Ensure learners are not receiving updates after course end

This reverts commit db4c3b12.

This reverts commit c1fe3c3a.

Set expiration_date field in IDVerificationAttempt model

update edx-enterprise to latest release

* Generate common/djangoapps import shims for LMS
* Generate common/djangoapps import shims for Studio
* Stop appending project root to sys.path
* Stop appending common/djangoapps to sys.path
* Import from common.djangoapps.course_action_state instead of course_action_state
* Import from common.djangoapps.course_modes instead of course_modes
* Import from common.djangoapps.database_fixups instead of database_fixups
* Import from common.djangoapps.edxmako instead of edxmako
* Import from common.djangoapps.entitlements instead of entitlements
* Import from common.djangoapps.pipline_mako instead of pipeline_mako
* Import from common.djangoapps.static_replace instead of static_replace
* Import from common.djangoapps.student instead of student
* Import from common.djangoapps.terrain instead of terrain
* Import from common.djangoapps.third_party_auth instead of third_party_auth
* Import from common.djangoapps.track instead of track
* Import from common.djangoapps.util instead of util
* Import from common.djangoapps.xblock_django instead of xblock_django
* Add empty common/djangoapps/__init__.py to fix pytest collection
* Fix pylint formatting violations
* Exclude import_shims/ directory tree from linting

Squash experiments DeprecatedEdxPlatformImportWarning

Python Requirements Update

[BD-21] Upgrade edx-completion and fix corresponding unit tests

This reverts commit 39a22734.

Skip auto-enrolling users if they are already enrolled in their auto-enroll enabled courses to prevent downgrading users from paid course modes to audit/free course modes when they activate their account.

Some tests were still relying on deprecated
WaffleSwitchNamespace.override method, which was working before because
we were importing WaffleSwitchNamespace from waffle_utils.__init__. This
no longer works after we import WaffleSwitchNamespace from edx-toggles.

Codejail logs all calls to `safe_exec` that include a `slug`.
Provide a `slug` in the Python-safe-exec debug view so that
usages of it are logged (for debugging purposes).

TNL-7649

SysAdmin: Removed external authentication map repair button from User Tab

remove users listing and staff listing download csv from the sysadmin