[TNL-287] Text Annotation Tool: Reply/Grouping Bug Fix
make the 'ENABLE_THIRD_PARTY_AUTH' feature flag be microsite aware
HTML Textbooks: Adding annotation css files group
Annotation Tools: Removed Public/Private Permissions Trigger
Annotation Tools: Adding Check for Grouping in MyNotes

- Grouping instance checked instead of prototype

- adding comments
Downgrade gunicorn.
Merge pull request #5164 from edx/feanil/revert_gunicorn

Downgrade gunicorn.
Enable third party auth in LMS acceptance tests

Update db cache
Merge pull request #5166 from edx/cdodge/hotfix-disable-social-auth-for-white-labels

make the 'ENABLE_THIRD_PARTY_AUTH' feature flag be microsite aware
LMS: removing breakpoint-centric styling + small comment cleaning on edx-specific footer
LMS: renaming edx-specific footer template files/references
LMS: revising markup/styling of edx-specific footer
LMS: optimizing header PNG asset
Fixed 404 on courseware when users last visited subsection becomes unpublished.
LMS-6492
Assert course equality in bulk, so that all differences are displayed
Add test of import around duplicate url names [LMS-11345]
Verify using mixed that auto-publish actually updates child pointers
Fix auto-publish test to work with old-mongo
Make split_draft correctly autopublish both parent and child during create_child
Make split_mongo assert block identity uniqueness only over (block_type, block_id) tuples [LMS-11364]