-Updated middleware setting to use use middleware insted of
middleware_classes
-github install of django-method-override fork to support
new style middleware in django1.11

These settings are used to toggle new authentication class in discussion and bookmarks app. The auth class is in openedx/core/lib/api/authentication.py and was added to replace deprecated OAuth2Authentication class in [rest_framework_oauth library](https://github.com/jpadilla/django-rest-framework-oauth)

[TNL-7043] If vertical block content is in an iframe in the learning microfrontend app, add a base tag in the head (of the iframe document) to force links to navigate the parent window.

Read STATICFILES_STORAGE_KWARGS from config to allow separate storage configuration for static assets

This will remove imports from __future__ that are no longer needed.

https://docs.python.org/3.5/library/2to3.html#2to3fixer-future

* Always run CSMHE migrations for every application in all contexts

API docs are now always available, no more toggle to enable them.

- The fields need to be unicode not bytes.  In python 2 it was auto
converting.
- The static url base has been allowed to be a unicode string for a
while.

https://github.com/edx/edx-platform/pull/20645

This introduces:
* A new XBlock runtime that can read and write XBlocks that are persisted using
  Blockstore instead of Modulestore. The new runtime is currently isolated so
  that it can be tested without risk to the current courseware/runtime.
* Content Libraries v2, which store XBlocks in Blockstore not modulestore
* An API Client for Blockstore
* "Learning Context" plugin API. A learning context is a more abstract concept
  than a course; it's a collection of XBlocks that serves some learning purpose.

-Remove Depricated View and tests

Prod-349

* reword INCR-483: Make compatible with Python 3.x without breaking Python 2.7 support

pick INCR-483: Re-run isort for lms/envs/test.py

INCR-483: change import order

INCR-483: PyLint fixes

* INCR-483: Fixes useless suppression

* INCR-483: Remove unused get_swagger_view

Dashboard is set to load 250 courses instead of
all the courses. A flag is also added to change
the number the courses to load.

PROD-204

Some deprecated functionality has been removed:

- Reading data field and transforms being applied in the init() method.
- The source field.
- The source_visible attribute.

Add CSRF_TRUSTED_ORIGINS settings to successfully make POST requests from edx-learner-portal to edx-platform - ENT-2025

* Add IdentityServer3 Backend

This adds a backend for users who want to use IdentityServer3 as their
SSO provider. It can be used with the OAuth2ProviderConfig in django
admin to point to an external provider.

changed ICP license to link and added
sentence with ICP license

PROD-277

ENT-1887 | Adding logic for new business marketing footer url construction, while maintaining backwards compatibility

Fixing quality test

Testsing out a default value for the sake of jenkins tests. will revert

Fix footer test from being flaky

Moving an import statement

ran isort. adding a test. fixing 1 quality issue

Quality cleanups

Attempting more quality fixes

adding back in config variable name for default value

Adding ENTERPRISE_MARKETING_FOOTER_QUERY_PARAMS to common settings

Changing marketing_url logic to only concatenate enterprise url to root if the enterprise url is relative (starts with a /)

quality fixes

ARCH-636

Moving rbac settings above plugins

Moving the setting above plugins in common.py for the lms and cms as well

This reverts commit 8c805999.

Removing the Deprecated the 'external_auth' package in favor of 'third_party_auth' which is the current recommendation.

This reverts commit b0b8a76d.