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
TE-468 JS test improvement: test for attributes specifically

This test is failing in a different test environment (Solano) because
the built html has reversed the order of the width and height attributes
from what we are expecting. This change focuses the assertion to the
pieces that are important (as noted in the unchanged comment above
the assertion).
Merge pull request #5088 from edx/dan-f/test-lms-passes-group-id

Ensure LMS passes correct group_id when querying content
Merge pull request #5169 from edx/benp/solano2-jstest-failure

TE-468 JS test improvement: test for attributes specifically
Calculate has_changes only Section/Subsection only on Outline page
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
show video controls for all youtube videos
TNL-184
Merge pull request #5140 from edx/zub/bugfix/plat-101-playercontrolsnotvisible

show video controls for all youtube videos
Merge pull request #5152 from edx/tim/less-has-changes

Calculate has_changes only Section/Subsection only on Outline page
Fixed 404 on courseware when users last visited subsection becomes unpublished.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]
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