ARGO-302: added back the old workgroup names to the list, to maintain backwards compatibility (for instances where the uber APO hasn't been updated to allow the new workgroups to appear in the .htaccess file)
ARGO-302:  prior commit added the old manager and viewer workgroup names to the wrong list, unswitched them
ARGO-273:  fix a boolean operator precedence issue so that the can_manage_content? and can_view_content? calls actually matter when the is_admin calls return false