Merge pull request #15289 from edx/jlajoie/EDUCATOR-434

cms/djangoapps/contentstore/course_group_config.py

cms/djangoapps/contentstore/utils.py

cms/djangoapps/contentstore/views/component.py

cms/djangoapps/contentstore/views/item.py

...pps/contentstore/views/tests/test_group_configurations.py

cms/djangoapps/contentstore/views/tests/test_item.py

cms/static/js/spec/views/group_configuration_spec.js

cms/static/js/spec/views/pages/container_spec.js

cms/static/js/spec/views/pages/container_subviews_spec.js

cms/static/js/spec/views/pages/course_outline_spec.js

cms/static/js/views/group_configuration_details.js

cms/static/js/views/modals/course_outline_modals.js

cms/static/js/views/modals/edit_xblock.js

cms/static/js/views/pages/container.js

cms/static/js/views/pages/container_subviews.js

cms/static/js/views/partition_group_details.js

cms/static/js/views/xblock_access_editor.js

cms/static/sass/elements/_forms.scss

cms/static/sass/elements/_modal-window.scss

cms/static/sass/views/_container.scss