Merge pull request #23284 from edx/ddumesnil/calendar-sync-button-AA-36

lms/static/images/calendar-alt-regular.svg

lms/static/sass/features/_course-experience.scss

lms/urls.py

openedx/features/calendar_sync/api.py

openedx/features/calendar_sync/plugins.py

openedx/features/calendar_sync/tests/test_plugins.py

openedx/features/calendar_sync/tests/test_views.py

openedx/features/calendar_sync/urls.py

openedx/features/calendar_sync/views/__init__.py

openedx/features/calendar_sync/views/calendar_sync.py

openedx/features/course_experience/__init__.py

openedx/features/course_experience/course_tools.py

...nce/templates/course_experience/course-home-fragment.html

...experience/templates/course_experience/dates-summary.html

scripts/thresholds.sh

setup.py