This is an unused-as-of-yet utility function to generate a bunch
of ics files for a user's course schedule. Will be used as part
of the calendar_sync feature package.

AA-37

checking django-wiki and fixing deprecation warnings.

We upgraded these before in https://github.com/edx/edx-platform/pull/23119 along with django-countries (which released a new version just before that), but had to revert in https://github.com/edx/edx-platform/pull/23237 because of a performance regression in the admin page for EnterpriseCustomer.  We think django-countries was the culprit and have pinned it, so trying these two again by themselves.

- switches to openedx-calc from PyPI
- includes edx-rest-api-client major upgrade.

ARCHBOM-952

Pulling in changes to try and fix JSONField formatting in django admin.

ENT-2677

-Upgrade edx-drf-extensions
-settings-update

This partially reverts #23318.

The video thumbnail and transcript tasks were the only things using chord_task from
edx-celeryutils, which in turn was blocking django-celery removal. But, they're no longer used.

Co-authored-by: Diana Huang <diana.k.huang@gmail.com>

Update ORA to 2.6.16 | Fixes the text_response property to be more backwards-compatible with _old_ ORA blocks.

Run `make upgrade` on edx-platform to update python packages.
PROD-1333

Remove DOP apps from INSTALLED_APPS.
Remove DOP libraries from requirements.

The last time we tried this upgrade we encountered timeouts on the quality job, which it now appears were due to the worker running pylint common running out of memory and killing the Jenkins process. Switching to a different worker type with double the RAM (8 GB vs. 4 GB) seems to have fixed this; about 5.5 GB was used. Upstream is aware of the high memory usage on large projects, it's apparently due primarily to a cache of parsed modules: https://github.com/PyCQA/pylint/issues/1495 .

Even after disabling some of the new checks that have been added, the new version of pylint found about twice as much to complain about. Just bumping the threshold for now to unblock the Django upgrade, we can try automated utilities like pyupgrade to fix some of these later.

This reverts commit 140738df.

-django-babel-underscore custom version to support django>=2.2

try to fix github

Remove duplicate constraints in requirements/constraints.txt uncovered by the recent change in pip-compile output format. I sorted the pinned dependencies by name to try and make it more obvious if this happens again. I also upgraded to pip-tools 4.5.1, which removes the line numbers from the enhanced pip-compile output added in 4.5.0, which should reduce future diff churn and merge conflicts but means that there's a large diff this one last time.

Also unpin edx-search again after the previous change to do that was apparently broken by a merge conflict.

- Reimplement `djcelery.common.respect_language` utility function so we
  can drop the dependency.
- Loosen `celery` pinning to a range, which brings in a fix for a
  possible crash bug

Also, pin `path` to 13.1.0 for now in order to continue supporting py35.