Added error prompts for the course team page
Pull correct URL when changing user permissions for course team
Fixup translations
Correct course team admin badging logic
Show disabled trash icon instead of not showing it at all
Studio: refactored  form-based Sass and revised markup/copy for course team admin mgmt
Fix variable scoping issue in Mako template
Fix up lettuce tests for course team page redesign
Updated changelog for course team admin story