Fix duplicated usernames in Sharing Permissions
Fix duplicated usernames in Sharing Permissions

When a user had edit permissions they appeared twice in the
form Settings in Sharing Permissions panel.

kobotoolbox/kpi,kobotoolbox/kpi,onaio/kpi,onaio/kpi,kobotoolbox/kpi,kobotoolbox/kpi,onaio/kpi,onaio/kpi,kobotoolbox/kpi