fix typo on testing.rst page

TNL-4214: Add safe template linter

Mark test as flaky TNL-4272

Fix improper escaping.

Add the providers information in the email.

ECOM-2931

Changes include:
- Fix code review comments
- Add comments
- Rename variables and files

Builds: empty xunit file as a function.

Delete face_upload and responsive-carousel.

Escape full names

Override field data within the XBlock runtime

To prevent XSS attacks, we now properly escape any string containing
the user's fullname. Enumerated by searching webview.py for "fullname",
and "git grep"-ing any occurrences. This also exposed some unused strings,
which I deleted for clarity.

TNL-3849/SEC-69

Merge pull request #11712 from mitocw/enhancement/aq/prevent_ccx_creation_if_CCXConnector_is_set_mitocw#189

Prevented creation of new CCX in lms, when a CCXConnector URL is set on a course

Remove the certificate generation button from progress page for audit student

MA-2164 cleaning up old lettuce

This also ensures that future lms shards are handled in a
smarter way, like our bok-choy shards. When no shard is
specified, rather than running all shards, only create
an empty xunit report.

Resolves an issue preventing students in self-paced courses from seeing all available discussion modules. ECOM-3733.

Upgrade Underscore.js and Underscore.string.js

Add help.

Clear out usages of deprecated vendor prefixes.

MA-2164 adding youtube url to encoded videos

Partially covered in bokchoy at lms/test_lms_instructor_dashboard.py:DataDownloadsTest 

Covered in bokchoy at studio/test_import_export.py:TestCourseBadExport 

Partially covered in bokchoy at studio/test_studio_course_create.py:CreateCourseTest 

Partially covered in bokchoy at studio/test_studio_container.py:EditContainerTest and studio/test_studio_container.py:DisplayNameTest

Testing feature file

FED-68

Release

Revert "Make Capa problems do initial load without AJAX."

Fixed accessibility issues with password reset

ECOM-3938