AA-126: Expose more course-outline info to learning MFE

- Use the same get_course_outline_block_tree call that the current
  outline uses
- Show number of problems in subsection display names
- Don't send links if the user is not enrolled or course isn't public
- Send subsection icons to MFE
- Send subsection descriptions to MFE
- Send completion info to MFE

https://github.com/edx/edx-platform/pull/24803

Fix timer text wrapping on smaller screens

AA-314/AA-330: Updates to courseware due date.

This will fix a bug about if assignment type is None, we will only
show the due date.
This will also fix a bug where we would show the assignment type and
due date on non-scored units within a subsection. Now it will only
show on scored units.
This also fixes the pill that displays from stretching out if the due
date text is multi-lined.

Mergeback PR from private to public.

Adding debug logs for CR-2618

The LEPL dependency was triggering a lot of deprecation warnings of the
form:

    venv/lib/python3.5/site-packages/lepl/matchers/support.py:497:
    DeprecationWarning: inspect.getargspec() is deprecated, use
    inspect.signature() instead
    argspec = getargspec(func)

It turns out that LEPL was only used by the rfc6266_parser package, which
itself was only used in one place to generate utf8-compliant
Content-Disposition headers.

This issue was noticed here:
https://github.com/SWW13/python-rfc6266-parser/issues/2
Unfortunately it is quite difficult to extract LEPL from the
rfc6266-parser package.

The rfc6266-parser package (https://pypi.org/project/rfc6266-parser/) is
itself a fork of the now-unmaintained rfc6266 package
(https://pypi.org/project/rfc6266/). Thus, it became high time to get
rid of this package. The FileResponse object can appropriately set the
Content-Disposition header, and thus replace the rfc6266 functionality,
since Django 2.0: https://code.djangoproject.com/ticket/16470

In our testing, the FileResponse object correctly set the
`filename*=utf-8''` value, following the RFC. The only difference is
that it does not provide "filename" fallback value, as expressed in the
RFC: https://tools.ietf.org/html/rfc6266#appendix-D

With rfc6266_parser:

    >> import rfc6266_parser
    >> rfc6266_parser.build_header("my_file_é.csv", filename_compat="video_urls.csv")
    b"attachment; filename=video_urls.csv; filename*=utf-8''my_file_%C3%A9.csv"

With FileResponse we have:

    >> from django.http import FileResponse
    >> import io
    >> response = FileResponse(io.StringIO(), as_attachment=True, filename="my_file_é.csv", content_type="text/csv")
    >> response.get("Content-Disposition")
    "attachment; filename*=utf-8''my_file_%C3%A9.csv"

We consider that this is a sufficiently minor difference, that will
impact very few browsers.

AA-125: Add Course Goals to MFE API

Security fix/fix xss in templates

entries

[MICROBA-551]

This fixes wrapping the exam-text bar on smaller screens during timed exams, which prevented users from viewing the exam's content.

Remove problem report and data download logs

ENT-3336: Added default for new enterprise setting INTEGRATED_CHANNELS_API_CHUNK_TRANSMISSION_LIMIT

Merge pull request #24863 from edx/testeng/bokchoy_auto_cache_update_a6bb5986b084ef773ba68686f3221eadd42157af

Bokchoy Testing DB Cache update

Make redis broker compatible with celery 4.0

The main difference between how instructor-paced and self-paced courses
work with respect to the outline on the backend is how we treat the
hide_after_due attribute on subsections (sequences). Namely, self-paced
courses ignore due dates even if they are specified on the sequence
(for example, by OLX import). If hide_after_due is True in a self-paced
course sequence, we only make it inaccessible after the entire course
ends.

This was tracked as BD-29 and TNL-7262.

fixing language issue for original activation email on sites using mo…

https://openedx.atlassian.net/browse/CRI-217
https://discuss.openedx.org/t/activation-email-in-multiple-languages/2808

Refactor program type enrollment checks

Checking if a user was enrolled in a program type was using the `name`
field which is subject to be translated. This change allows for us to check by
the type's slug which will be constant. This also includes the addition
of api.py files for the course_modes, catalog, and programs apps.