2. Add site configuration overrides to theming/helpers.py
3. Move microsite.get_value from theming/helpers to site_configuration/helpers
4. Move microsite_configuration.microsite.get_value usages to site_configuration.helpers.values

https://openedx.atlassian.net/browse/TNL-5008

Refactor all S3 code to use the django storage API and add swift
settings for openstack deployments

Adds cohorts as valid bulk email targets.

TNL-4356

Allows multiple bulk email targets to be specified at once.

-The previous "All" option has been split into "Staff" and "Learners"
-The backend changes made here lay the groundwork for cohort emailing
-The data migration, 0005, is somewhat large and requires deploy attention
-Tests have been updated
-Numerous safe-commit-linter fixes are included

OSPR-1155

Moves ENABLE_INSTRUCTOR_EMAIL and REQUIRE_COURSE_EMAIL_AUTH from settings files
to admin-accessible configuration models. This allows for the bulk email settings
to be modified without a new AMI deploy. See TNL-4504.

Also updates tests:
    -python tests mock out the new configurations in place of the old settings
    -lettuce test has been moved to bokchoy
        (note that there was some loss of coverage here - the lettuce tests had
        been doing some voodoo to allow for cross-process inspection of emails
        messages being "sent" by the server, from the client! In discussion with
        testeng, this seems outside the realm of a visual acceptance test. So,
        the bokchoy test simply confirm the successful queueing of the message,
        and leaves the validation of sending messages to the relevant unit tests.)
    -bok choy fixture has been added, to replace the settings in acceptance.py
    -lettuce and bok choy databases have been updated to reflect the backend changes

The new default is to have bulk_email disabled, we'll need to call this out in the
next OpenEdx release to ensure administrators enable this feature if needed.

OSPR-1155

By default, disable all caching in tests, to preserve test independence.
In order to enable caching, inherit from CacheSetupMixin, and specify
which cache configuration is needed.

[EV-32]

More accurately, this creates a 4th shard because the
last shard is always the default.

TEST_DATA_MIXED_MODULESTORE
Remove these test mixed modulestores:
TEST_DATA_MIXED_TOY_MODULESTORE
TEST_DATA_MIXED_CLOSED_MODULESTORE
TEST_DATA_MIXED_GRADED_MODULESTORE

More accurately, this creates a 4th shard because the
last shard is always the default.

The verification workflow assumes that all verified courses will have a
price. Free verified course modes cause a 404 when the user attempts to
enroll or upgrade.

TEST_DATA_MIXED_MODULESTORE
Remove these test mixed modulestores:
TEST_DATA_MIXED_TOY_MODULESTORE
TEST_DATA_MIXED_CLOSED_MODULESTORE
TEST_DATA_MIXED_GRADED_MODULESTORE

clear_student_state(), a method defined by ORA, requires information
about the user making the request. Since this xblock is not bound,
we must provide that information explicitly.

Conflicts:
	lms/djangoapps/instructor/tests/test_api.py
	lms/djangoapps/instructor/utils.py
	lms/djangoapps/instructor/views/api.py
	lms/djangoapps/instructor/views/api_urls.py
	lms/djangoapps/instructor/views/instructor_dashboard.py
	lms/djangoapps/instructor_task/api.py
	lms/djangoapps/instructor_task/tasks.py
	lms/djangoapps/instructor_task/tasks_helper.py
	lms/djangoapps/instructor_task/tests/test_api.py
	lms/djangoapps/instructor_task/tests/test_tasks.py
	lms/djangoapps/instructor_task/tests/test_tasks_helper.py
	lms/envs/aws.py
	lms/envs/common.py
	lms/static/coffee/src/instructor_dashboard/data_download.coffee
	lms/templates/instructor/instructor_dashboard_2/data_download.html

TNL-4195

The verification workflow assumes that all verified courses will have a
price. Free verified course modes cause a 404 when the user attempts to
enroll or upgrade.

CCX REST APIs
OAUTH2 authorization for CCX APIs
- oauth2 authorization required for ccx list.
- Course-instructor permission for ccx api endpoint
- Protection for detail view too.

Tests for CCX REST APIs and OAUTH2 authorization

Two new certificate statuses are introduced, 'audit_passing' and
'audit_notpassing'. These signal that the GeneratedCertificate is not
to be displayed as a cert to the user, and that they either passed or
did not. This allows us to retain existing grading logic, as well as
maintaining correctness in analytics and reporting.

Ineligible certificates are hidden by using the
`eligible_certificates` manager on GeneratedCertificate. Some places
in the coe (largely reporting, analytics, and management commands) use
the default `objects` manager, since they need access to all
certificates.

ECOM-3040
ECOM-3515

ECOM-3384

When one or many users are sent an enrollment or unenrollment email via
the teacher subscription form, the emails are written in the user
language. If the user has no preferred language, e.g: when the user does
not exist, the platform language is supposed to be selected. In
practice, the emails were not being translated at all.

This reverts commit 60860e3a.