fixes CNVS-8263
Test Plan
( note: Test in both old and new groups UI )
1) Navigate to a group set with users and groups
2) Using the popover menus add a few users into a few different groups
3) Ensure users are added into the groups as expected
Change-Id: Ia26b5ad055611a24973b3d8e903c6b371f439096
Reviewed-on: https://gerrit.instructure.com/25287
Tested-by: Jenkins <jenkins@instructure.com>
Product-Review: Marc LeGendre <marc@instructure.com>
QA-Review: Marc LeGendre <marc@instructure.com>
Reviewed-by: Jon Jensen <jon@instructure.com>