Modified criteria for upselling. User must have a dynamic deadline to receive an email with an upsell button

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

ENT-704

LEARNER-1705

LEARNER-2412

This reverts commit a1419b15.

Added explicit 'fields' attribute to OrganizationSerializer. Creating a
ModelSerializer without either the 'fields' attribute or the 'exclude'
attribute has been deprecated since 3.3.0.

LEARNER-2320

https://github.com/edx/edx-enterprise/compare/0.51.0...0.51.2

LEARNER-1694

Fix a11y failure

Fix header styling

Fix layout issues

Further layout fixes

The license for course run content is now stored on the CourseOverviews model and exposed via the Course API.

LEARNER-2791

Make image url in the task and pass to template

Address some of Cale's PR comments

Combine query functions into one. No debug logging

Pull int variables out into static class variables

Mixin needs to call super __init__ too

Remove multi-course copy from upgrade reminder

Address Cale's round 2 comments

Fix test_templates

By passing the date pre-formatted to ace.

Address PR comments

Fix linting

Add TODO comment about using LoggerAdapter

More lint fixes

Fix upgrade_reminder task from silently failing

Finish test_base.py tests

Address some PR comments

Some test_send_recurring_nudge fixes

Fix test_schedule_bin

Fix test_site_config

Fix test_multiple_enrollments

Tests pass now!

Use consistent naming: upgrade_reminder