Refactor data-sharing consent GET and POST handlers to not have too many statements, because readability matters.

ENT-4776

* fix: remove django-ipware constraint

* fix: upgrade py2neo from 3.1.2 to 2021.1.5

The dump_to_neo4j management command has not been working
since the upgrade to python 3.8. The latest version of
python that py2neo 3.1.2 states support for is python 3.5,
so this isn't surprising.

The earliest non-prerelease version of py2neo that supports
python 3.8 is 2020.x (skipping the 4.x and 5.x series). Since
we're going as far as a 2020.x, we may as well upgrade all the
way to the newest series, 2021.x. This commit does that upgrade,
as well as a handful of minor code modifications in order
to handle breaking changes that have been made to the py2neo
API, and some unrelated pin bumps as the result of
'make upgrade'.

This will also require an upgrade of Coursegraph's Neo4j
version from 3.2.x to 3.5.x.

TNL-8386

* fix: pin django-ipware<4.0.0
* fix: pin pylint<2.10.0

For Blackboard and Moodle

ENT-4082

ENT-4789

* feat: Celery tasks instead of synchronous emails for enrollment, in notify_enrolled_learners()

ENT-4779

ENT-4779

* feat: use edx-enterprise 3.27.11 for improved error handling in email notify task

ENT-4746

feat: add boolean field to third_party_auth to be used to remove providers from enterprise selection

Disabled pylint warnings in pylint_tweaks

fix: removed zipp and stevedore constraints
fix: removed kiwisolver and joblib constraints

fix: fix the way that page_size is passed as a param to the enterprise catalog get_content_metadat endpoint.
edx-enterprise==3.26.23

Revert "feat: edx-enterprise==3.26.22 | set the EnterpriseCatalogApiClient get_content_metadata request page_size parameter to 50;"

This reverts commit 7eb65129.

feat: edx-enterprise==3.26.22 | set the EnterpriseCatalogApiClient get_content_metadata request page_size parameter to 50;
The enterprise-catalog service has a default page_size of 10.
This change means that we'll make a smaller overall number of SELECTs against the enterprise-catalog database.

fix: removed matplotlib<3.1 constraint
fix: pinned pandas<1.3.0
fix: pin pandas and networkx to python-dateutil compatible version
fix: pin pylint==2.8.3 to pass quality build

Updated constraints of following packages:
inflect,geoip2,maxmindb,path,isort (isort>5.0.0 introduced wrong-import-order warnings so disabled the warning)