Update djpyfs

And move from base.txt to github.txt
Merge pull request #5421 from edx/db/update-djpyfs

Update djpyfs
Add a new user API for the notifier

This new endpoint is designed specifically to fill the needs of the
notifier and should not be used by other clients.
Merge pull request #5347 from edx/gprice/notifier-api-cohorts

Add a new user API for the notifier
Creative Commons Licensing for edX LMS and Studio
A little code cleanup
Fix rebase syntax errors
Remove typo and added import
Cleanup, docstrings and style improvements
Style improvements to match PEP8 and Pylint standards
Added name to AUTHORS file
Fixed a bunch of failing tests added a FEATURE flag to the backend
Moved feature flag check out of init to fix failing tests
Added feature flags to video context and fixed cloning of courses
Creative Commons Licensing for edX LMS and Studio
A little code cleanup
Cleanup, docstrings and style improvements
Style improvements to match PEP8 and Pylint standards
Fixed a bunch of failing tests added a FEATURE flag to the backend
Moved feature flag check out of init to fix failing tests