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TNL-3818: fixed recent activity mapping in thread-list sort

 [SOL-1668] Coupon codes application is not available for a user who has just activated his account

Disallow free verified course modes (second attempt)

When a user tries to purchase a verified certificate for the first
time or upgrade to verified, if the ecommerce checkout is enabled
redirect the user to the ecommerce checkout basket.

The verification workflow assumes that all verified courses will have a
price. Free verified course modes cause a 404 when the user attempts to
enroll or upgrade.

TNL-4324: Add check for strings that should be wrapped with HTML()

API request page improvements.

rtl support static pages

Fix encoding of Django-called Mako files to be safe

ECOM-4024

remove unnecessary parentheses

change css properties for mixins bi-aap in login/register page

change css properties for mixins bi-app in about course page

change css properties for mixins bi-app in the dashboard

change css properties for mixins bi-app in help template

change css properties for mixins bi-app in the home page

change css properties for mixins bi-app in jobs, press and media pages

remove the extra spaces

- Make mako-wrap-html fire when '<' found anywhere in unwrapped string
- Fix typo
- Fix quality errors
- Fix defect found when Python string broken over lines

Also include the following:
- new rule for strings that should be wrapped with HTML()
- allow expressions to use "| n, unicode"
- refactor string parsing into separate class
- switch end_index to be the index following the expression

Add a11y test for the course home page.

Allow the "Default Group" to be renamed (automatic cohorting)

TNL-4324: Enhance linter for HTML() and Text()

ECOM-3198 Add banner image to the program listing program cards

The old code set the output-encoding to None, which means, I want
Unicode strings as output.  This made Mako pass markupsafe objects to
"unicode()", which applied all the escaping.  Then the result would be
given to Django, would would html-escape it again, resulting in
over-escaping.

By setting the output-encoding to utf8, we use filters.encode.utf8
instead, which is aware of Markupsafe, which avoids the over-escaping.

- Add capability to run linter on file or directory
- Add rule for HTML() requiring Text()
- Add rule for HTML() and Text() being closed before format()
- Add rule for Text() unnecessary without HTML()
- Enhance expression parsing
- Add real arg parser for script
- Clean up unit tests

Introduce Pattern Library test pages (take two)

Lower padding on header for 320 breakpoint.

FEDX-88. Marking bok-choy test as flaky.

FEDX-93

These are developer only pages, so can not be seen in production
environment. On devstack, you can access these pages in LMS and
Studio at:

    /template/ux/reference/pattern-library-test.html

This is the second attempt to enable the Pattern Library. The
first attempt broke Django Templates and didn't work correctly
with right-to-left styling.

TNL-4355

Revert "Introduce Pattern Library test pages"

Add configurable name for verified track cohort.

Course Updates date validation

Adding i18n info for developers

Decreased the flakiness of upload_tar function