Pin moment dependency to 2.18.1

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

LEARNER-2791

Refactor recurring nudge and verified upgrade reminder emails

Checking if CAD exists before using it in dashboard

[WIP] cleanup django 1.4 shims and mentions

Harry rein/learner 2784 sock cleanup

Harry rein/learner 2308 update course goal

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

LEARNER-2308

Once a goal has been set for a user on the course home message,
allow them to update it on the course home side bar. Automatically
sets a course goal for users when enrolling in a verifiable course.

Bug fix for unpublished courses that users have purchased within a pr…

LEARNER-2026: Refactor course info events

LEARNER-2026

LEARNER-2026

Adds translation for lms progress chart tooltip.

bump edx-enterprise version to 0.51.0

LEARNER-2026: Revert remains of 'upgrade upsell to course info banner'.

[LEARNER-2715]

Tooltip text under lms->courseview->progress tab->chart
was not under any translation, causing it to appear untranslated for
learners. This would enable its translation to any language.

LEARNER-2607

[ENT-606] Remove unused generic Enterprise-related enrollment logic

Previously, these tests were skipped in order to support Django 1.4.

Course keys as PKs don't appear to break detail links in admin pages
anymore.

- Convert hero events to BI events.
- Upgrade click event clean-up

LEARNER-2026

Add loading icon to reviews page.