Moves ENABLE_ENTERPRISE_INTEGRATION to settings.FEATURES,
and changes the default value to False.

Separate the date and link logic out of VerifiedUpgradeDeadlineBlock, so that it can be called directly with prefetched data for check_and_get_upgrade_link_and_date

EDUCATOR-171

This includes several general enhancement in addition
to the fixes for unified_course_view:
1. Add support for default when no waffle flag defined.
2. Add support for table_blacklist to assertNumQueries.
3. Rename flag to 'course_experience.course_outline_page'.
4. Change flag default to True when it is not defined.

LEARNER-609

Add a new waffle switch that allows us to assume zero grades for
learners who have no entry previously recorded, and another to
disable persisting grades for unengaged learners.

TNL-6691

TNL-6674

Add consent check to course access prerequisites; add utility functions to provide interface to course-specific consent in Enterprise app

nit: css

This reverts commit d59ab18b, reversing
changes made to 0ebab35e.

Initial commit

TNL-5484

TNL-5835

As part of the Robust Grades rollout, we expect to see some DatabaseErrors in
various methods that write to the database. Since the success of this write
operation is not needed for the end-user, we just log and swallow the error.

In the future, we'll also enqueue an async task to finish the write operation
that failed.

Adds ENABLE_SUBSECTION_GRADES_SAVED feature flag to both lms and cms. Also
installs the wiring that will allow robust grades to be used for courses
that enable it. This functionality is still gated by the feature flag
and should not be used until the remaining robust grades work is finished.

TNL-5002

Performance improvement, this cache is no longer needed thanks
to block_structure caching data.

TNL-4874

1. update query counts with more accuracy
2. don't use defaultdict in block_structure

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]