Making the regex that gets the index courses more secure

Rename cookie-policy-banner to frontend-component-cookie-policy-banner

BOM-736

This reverts commit af4e7a34.

After merging the above commit, I was seeing 'internal-error's
on Stage in responses to the Registrar API. I am temporarily
reverting it until I can figure out a fix.

quality fixes

python 3 fixes

quality fixes

BOM-724

BOM-637

Awais786/bom 482

Management command to add history to course_overviews_courseoverview.

Fixing python3

use the specified user from the parameter to determine if the flag is…

This commit completes the program_enrollments LMS app
Python API for the time being. It does the following:
* Add bulk-lookup of users by external key in api/reading.py
* Add bulk-writing of program enrollments in api/writing.py
* Move grade-reading to api/grades.py
* Refactor api/linking.py to use api/writing.py
* Refactor signals.py to use api/linking.py
* Update rest_api/v1/views.py to utilize all these changes
* Update linking management command and support tool to use API
* Remove outdated tests from test_models.py
* Misc. cleanup

EDUCATOR-4321

BOM-314

BOM-376

Python Requirements Update

Python3 swarm 2

python3 compatibility fixes all tests

python3 compatibility

BOM-273

BOM-723

BOM-629

BOM-574

BOM-647

Fixing python3

Dashboard Programs Page Aside tag update

Enterprise Version Bump