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.

LEARNER-2026

LEARNER-2026

[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

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

Mock out the static_replace modules in the proper location.

LEARNER-2026

TNL-6381 added an upgrade upsell to course info. In PR #15265, this was
partially removed/moved, but some clean-up work remained.

LEARNER-2026

LEARNER-2332

Since CourseTalk doesn't allow for loading a read and write reviews
page at the same time, this commit adds a loading icon to show that
we need to grab the iframe.