Studio: resolving visual spacing  of hide from students checkboxes
Studio: resolving scroll/overflow UI in component visibility settings
Merge pull request #6391 from edx/talbs/fix-cohorted-courseware-checkbox

FIX - Studio: resolving visual spacing of "hide from students" checkboxes
Merge pull request #6390 from edx/talbs/fix-cohorted-courseware-component

FIX - Studio: scroll/overflow in component visibility settings
first pass at adding cohort groups to group configuration page
Back-end support for cohort group configurations
Squash me: `if(` -> `if (`
Refactor to use generic list view
Refactor to use generic list item view
WIP: Implement cohort group config UI