The learning_sequences app has its own model for Course Outlines.
Prior to this commit, these course outlines were only populated by
a management command in the learning_sequences app that queried
modulestore. This commit does a few things:

1. Move the update_course_outline command to live in contentstore
   (i.e. Studio). This makes learning_sequences unaware of
   modulestore, and makes it easier for us to extract it from
   edx-platform (or to plug in different kinds of course outlines).
2. Add tests.
3. Add performance and debug logging to course outline creation.
4. Make course outline creation happen every time a course publish
   happens.

This will allow us to start collecting data about how long building
course outlines takes, and get error reporting around any content
edge cases that break the course outline code.

* Commits:
  Bump version of lti-consumer-xblock to include fixed migrations

Bump version of lti-consumer-xblock to include fixed migrations from https://github.com/edx/xblock-lti-consumer/pull/136

[BD-03] [TNL-7805] [BB-3371] LTI Discussion Tab

edx-enterprise version bump.

This PR lays the groundwork for a an LTI tab that can embed any LTI1.1-based
tool as an course tab. It also adds another tab based on this LTI Tab that
offers special support for embedding LTI-based discussion tools in a course
tab. If enabled this will replace the existing discussion tab.

Python Requirements Update

update thresholds after IM security fixes 5

This will help us flip mysterious cases where proctored exams are
marked inactive.

JIRA:MST-609

Pulls in:
* Translation corrections (1.10.1)
* Fix deprecated import, which is soon to be unsupported (1.10.2)

Add edx_sga to our code_owners mappings.

[SE-3530] Adds Boto3 support for Import/Export functionality

[MCKIN-26432] [BB-3158] Add Unit to breadcrumbs navigation

Pulls in:
* Degreed API endpoints (3.17.8)
* Fix deprecated third_party_auth import (3.17.9)

Revert "[TNL-7361] - Restrict Instructor Tab from masquerading user with student role."

Mergeback PR from private to public.

remove markdown constraint

Incident Management Security Fixes 7

Python Requirements Update

* add last_login user and staff only field in user_api

Use django-wiki version 1.0.0
Pin python3-saml<1.10.0

Adding a common_constraints.txt

fix cookie monitoring middleware

On missing sass directory, the following kind of warning was printed:

        Sass dir '[{'sass_source_dir': path('lms/static/sass'), 'css_destination_dir': Path('/openedx/themes/indigo/lms/static/css'), 'lookup_paths': [Path('/openedx/themes/indigo/lms/static/sas│..  s/partials'), path('lms/static/sass/partials'), path('lms/static/sass')]}, {'sass_source_dir': Path('/openedx/themes/indigo/lms/static/sass'), 'css_destination_dir': Path('/openedx/themes│.  /indigo/lms/static/css'), 'lookup_paths': [Path('/openedx/themes/indigo/lms/static/sass/partials'), path('lms/static/sass/partials'), path('lms/static/sass')]}, {'sass_source_dir': Path('│ /openedx/themes/indigo/lms/static/certificates/sass'), 'css_destination_dir': Path('/openedx/themes/indigo/lms/static/certificates/css'), 'lookup_paths': [Path('/openedx/themes/indigo/lms│ /static/sass/partials'), Path('/openedx/themes/indigo/lms/static/sass')]}]' does not exists, skipping sass compilation for '/openedx/themes/indigo'

Which was rather inconvenient. Instead, we now print the following
warning:

    Sass dir '/openedx/themes/indigo/lms/static/certificates/sass' does not exists, skipping sass compilation for '/openedx/themes/indigo'

The cases of no cookies or no cookie groups
found would cause an error. This was fixed
and additional test coverage was added.

Fix Markdown errors on discussions tab 

Bump edx-when to 1.3.2 (silences a warning)

[ADD]  /user_api endpoints in api-docs