* Python code cleanup by the cleanup-python-code Jenkins job.
This pull request was generated by the cleanup-python-code Jenkins job, which ran
```
cd lms/djangoapps/dashboard; find . -type f -name '*.py' | while read fname; do sed -i 's/ # lint-amnesty, pylint: disable=super-with-arguments//; s/ # lint-amnesty, pylint: disable=import-error, wrong-import-order//; s/ # lint-amnesty, pylint: disable=wrong-import-order//' "$fname"; done; find . -type f -name '*.py' | while read fname; do pyupgrade --exit-zero-even-if-changed --py3-plus --py36-plus --py38-plus "$fname"; done; isort --recursive .
```
The following packages were installed:
`pyupgrade,isort`
* feedback done
Co-authored-by: Zulqarnain <muhammad.zulqarnain@arbisoft.com>
* Moving plugins infrastructure to edx-django-utils
This PR extracts the code that enables plugins in edx-platform and puts it in edx-django-utils. This is done to allow other IDAS to add plugin functionality.
Doing modulestore lookups is expensive, so commit 695b036 created a
course_publish listener that would materialize the discussion ID to
XBlock usage key mapping into the CourseDiscussionSettings model.
However, the signal wasn't hooked up to the Studio process, so that
async task was never called. When hooking it up, I also discovered that
bok choy tests related to partitioning were failing because of a race
condition where multiple processes are overwriting the discussion
settings. To make sure this wasn't an issue, I moved the mapping to
its own table.
This is part of ARCH-111, and the overall Course Structures API
deprecation.
