Mergeback PR from private to public.

fixed xss linting issues

Upgrade lti-consumer-xblock

[BD-6] Fix invalid escape sequence deprecation warning.

ENT-2657: Added COURSE_CATALOG_URL_ROOT to django settings

Downgrade pycontracts to 1.8.12

They seem to have removed 1.8.14 from pypi.

Check current enterprise for consent

AA-177: Add masquerading for course home MFE

* remove unenroll for masters

* i18n string

When checking if consent is needed, ignore any enterprise
learner details that are not for the learner's currently
active enterprise.

ENT-3049

- Looks at masquerading config for dates, outline, metadata, and
  celebration APIs in course_home_api / courseware_api.
- Consolidates and cleans up places we check whether masquerading
  gives us full access to a course.

Python Requirements Update

[REV-1226] Temporarily increase default throttle rates for service user

Temporarily increase default throttle rates for service user to handle increased throughput against data sharing consent endpoint

instructor_task: remove shoppingcart (DEPR-43)

Fix 'npm install' command execution error handling

* Displays escalation email on Special Exams tab of instructor dashboard. MST-274

* updates for requested changes

* updates necessary for unit testing

* Fixes for pylint warning

* fix for quality tests

Updating ID Verification Approved email template.

PROD-1639

* modern eslint allowances

* update topic teams to request team membership per local teamset

* update tests for topic_teams change

* cleanup

Co-authored-by: Ben Warzeski <benwarzeski@edX-C02CD0HCLVDM.cable.rcn.com>

* Replace track calls with eventtracking in task_track and server_track

* Making  events compatible with events emitted via track app

* Fixed broken tests and quality violation

* Removed useless changes in shim. using  in  to have  and  keys in event context

Co-authored-by: zia.fazal@arbisoft.com <zia.fazal@arbisoft.com>

enum34 is causing problems in python3.8 tests of edx-platform because it has incompatibility with recent versions of python, the error the error happens while importing the re module in these python versions.

This library is a backport of enum of python3.4 made for python<3.4, therefore is not needed anymore.

edx-val was updated to remove that dependency: https://github.com/edx/edx-val/pull/245

* Edit team manage to check sizes at end of import

* Fix size validation to take new teams into account

* Remove redundant max size check

* Consolidate team membership counters

* Remove unused user_ids_by_teamset_id set

* Fix team removal to only occur after validation

* Update team full error message

* Prefetch users when looking up team counts

Upgrading edx-enterprise to 3.3.11

allow moderators to post in forum

Removed pymongo constraint in paver.in

Add a field to VEM config model that will decide the percentage of
courses allowed to go to VEM pipeline. The courses that don't meet the
criteria will go to VEDA.

PROD-1722