UWSDEV-49: List users of an access group in a table sorted by first name.
Plus tests, and other improvements.
Merge branch 'access_control' of github.com:IntersectAustralia/dc21 into access_control
UWSDEV-49: Add activate/deactivate button on view access group page.
Remove popup dialog in removing an access group from a user's list. Add more tests for access control.