Added course level lang attribute for LMS

added lang attribute to Studio

fixed error when trying to get language attribute on course that does not exist

simplified code

added lang attribure to more places in LMS, added migration for language attribute in course_overview

fixing contraints in the database for language attribute

added lang attribute to several more places in LMS and Studio

added lang attribute to discussion and custom pages; cleaned up code

fixed issue that was causing test failures

moved lang attribute higher in tree in two places

TNL-6628

TNL-4906 Subsections now use radio buttons, to allow for "hide after due" as a
visibility option. Also, all tabs have been consolidated to "Basic" and
"Advanced", and visibility options have moved there.

Documentation links are updated to assist course authors with the new
visibility options. Tests have also been updated, and the changes suggested
in TNL-4951 are included.

TNL-4692

- Rename escape_json_dumps to dump_js_escaped_json
- Rename escape_js_string to js_escaped_string
- Update js_escaped_string to output empty string for None
- Introduce dump_html_escaped_json
- Move dump_js_escaped_json after the pipe as new best practice
- Introduce additional uses of helpers
- Introduce new djangolib directory and move js_utils

* mattdrayer: Updated get_themed_template_path

- added the new field review_rules for software secure
- added a new tab name "Additional Settings" for the proctored/timed exams

Make escaping for json simpler and more consistent in Mako templates
- add escape_json_dumps to escape and json.dumps
- add escape_js_str to escape javascript string
- refactor Studio to use escape_json_dumps in Mako templates

TNL-2646: Escape json.dumps

Instructor-led is changed to instructor-paced. Adds a label to the
course outline page to show the course pacing.

ECOM-2794
ECOM-2800

* Automatically create user partitions on course publish for each ICRV checkpoint.
* Disable partitions for ICRV checkpoints that have been deleted.
* Skip partitions that have been disabled when checking access.
* Add verification access control UI to visibility settings.
* Add verification access control UI to sequential and vertical settings.
* Add partition scheme for verification partition groups.
* Cache information used by verification partition scheme and invalidate the cache on update.
* Add location parameter to UserPartition so the partition scheme can find the associated checkpoint.
* Refactor GroupConfiguration to allow multiple user partitions.
* Add special messaging to ICRV for students in the honor track.

Authors: Zubair Arbi, Awais Qureshi, Aamir Khan, Will Daly

TNL-2855

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

TNL-2303

Use native checkboxes for courseware license options
In Studio settings editor for video module, don't show license if feature-flagged off
Don't let Scope.contents fields leak to Studio editor
JS gettext() must all be on the same line for i18n
Add docstrings for bok-choy tests
Remove LicenseMixin from HTMLDescriptor
Responding to UX review feedback
Add aria-pressed attribute
Use https links instead of protocol-relative links for links to creativecommons.org
Remove license from course outline page in Studio

This allows course authors to choose between two difference licenses for their
course content: All Rights Reserved, or Creative Commons. In the backend, XBlocks
that wish to allow custom licenses need only inherit from LicenseMixin, which
adds a `license` field as a string.

License information is displayed in the Studio editor view, and just below the
rendered XBlock in the LMS. In addition, if the course block itself has a custom
license set, this license will display just below the main body of the page
on courseware pages.

This entire feature is gated behind the LICENSING feature flag.

<nav> elements for the actions a user can perform on a perticular
page contain inaccessible label whic causes screen reader users
confusion regarding to their current navigation.

TNL-1531

It's a problem for accessibility

* updating vendor files
* updating class syntax (to new FA-based classes) for all UI elements
* correcting broken tests

UX-1054

[LMS-11372]
[LMS-11370]

To include size warning of 10 MB.  Also updated styling on existing learn more
links

Studio: adding course re-run-centric static template rendering

* initial HTML for dashboard states
* initial HTML for new course re-run view/form
* initial HTML placeholder for outline alert UI

Conflicts:
	cms/templates/index.html

Studio: adding styling for course re-run-centric views

* adding new view/page mast-wizard type
* refactoring create course/element form styling
* adding course re-run view specific styling
* adding courses processing styling (w/ alerts and status)

Course rerun server-side updates: support display_name and DuplicateCourseError.

Studio: further design revisions and tweaks from feedback

* removing new window attribute from re-run control
* removing links from processing courses
* revising look/feel of dismiss action on dashboard + alert
* correcting font-weight of dashboard processing title
* adding extra space to course rerun action on dashboard
* re-wording secondary cancel action on rerun view

Conflicts:
	cms/templates/index.html

Added interation on unsucceeded courses in dashboard

Studio: removing 'rel=external' property from course re-run actions

Studio: removing hover styles for processing courses

Fixed value bug in split and set course listing to display run

moved task.py for rerun