With an upcoming bok-choy upgrade, 'not-present' and
'invisible' are two distinct concepts. In the upgrade, an
invisible element must be present on the page. This commit
draws that distinction across two helper methods, one for
'invisible' and the other for 'not-present' (or, not on the page at all).

* updated the flags for social media sharing
* added facebook feed ui to share public url
* update the condition logic
* update the code as per suggestion and added pick new style for share buttons
* update the css class reference
* update the bok-choy test
* updated description and some text touch-ups
* moved the JS related to facebook into separate location
* js formatting
* Add trailing comma per chrisndodge
* Add wait to fix flaky test...maybe

* added generate certificates task and bok choy tests
* added unit tests
* changes based feedback and improved acceptance test
* Change header text
* changes based on feedback on 24/6
* added task_id to api output
* fixed broken test
* Remove "Instructor" from strings, per Docs team
* Fixed flaky entrance exam test

Display warning message on course outline in Studio when course contains deprecated features/components

TNL-2303

TNL-2386

TNL-2494

Fixes tests, adds internationalized strings for new state tooltips, corrected tooltip javascript, etc.

Remove flaky flag, improve linting.

removed JavaScript function specific to the upsell toggle
removed bok choy test
Removed all referenced to toggleExpandMessage()

Extends the common capa response types (string, numeric, multiple
choice, checkbox, dropdown) with feedback and hint
capabilities. "Feedback" refers to feedback shown to the student when
they check the problem, looking at their specific answer. "Hints"
refers to a Hint button in LMS which the student can click at any time
to see hints for that problem. The implementation extends the markdown
syntax to include feedback and hints. There are new Feedback-and-Hint
specific templates in Studio when the author clicks to add a new
problem.

TNL-2304

some optimisations

refactored code and added created event

added test to make sure generate event is emitted

changes based on feedback on 6/11

added certificate web page and tests

fixed quality violations

Sometimes this file does not exist depending on when a test failed. Remove it gracefully.

ECOM-1591

- Adding ?include_expired=1 to course detail requests will now include expired course verifications

Introduces a tabbed view component which displays its subviews and
handles Backbone navigation between each tab. This is used to implement
the "My Teams" and "Browse" areas of the Teams tab. Right now the
content of both tabs is stubbed out with a placeholder view which should
be replaced by TNL-1893 and TNL-1892.

https://github.com/edx/edx-platform/wiki/Python-Guidelines#imports-order

Follow-up to #8368