Course Grade Update Signal/Task

Makes use of the new SUBSECTION_SCORE_CHANGED signal to trigger a task that
updates persisted course grade values. We've also renamed SCORE_CHANGED to
PROBLEM_SCORE_CHANGED to head off any issues with unclear signal names.

TNL-5740

Bump pylint threshold back up

Merge pull request #13791 from edx/shr/bug/TNL-5750-User-posts-disappear-without-General-course-wide-topic

Fix checking empty array

Merge pull request #13822 from CredoReference/TNL-5821-staff-only-static-tab-visible-when-masquerading-as-a-student

TNL-5821 - bugfix

Honor verification required setting for professional courses in the receipt view

Remove flaky for test_full_name_field

TNL-5691

Aj/tnl 5644 exposed icon

Correct task_type for other rescore-if-higher admin commands

AC-582 progress page markup corrections

Unrevert "Fix Gating to use grades API, instead of its own calculations"

Generate certificates for verified users with audit certificate statuses

Aj/tnl 5549 problem meta refactor

ECOM-5050 Expose mobile-friendly field for course runs returned by Course API

Updated the problem meta to show a score of 0 and refactored/simplified the JS that build the problem meta string
TNL-5549

Support for rescoring a problem only if score is improved.

TNL-5046

Update translations (autogenerated message)

Convert instructor dashboard coffeeScript to js

Pin `sqlparse` to 0.2.x

Capa button bar attempt message position for i18n

update_course_in_cache should retry on exceptions

Recalculate Subsection Grade task retry logic

Make problem block tests more realistic.

Includes:
* CAPA
* ORA
* LTI
* LTI-Consumer
* SGA
* Randomized Content Block

TNL-5692
TNL-5464