Update sending-data guide to drop mentions of _partial and add details on uid=501(briandquinn) gid=20(staff) groups=20(staff),401(com.apple.access_screensharing),12(everyone),33(_appstore),61(localaccounts),79(_appserverusr),80(admin),81(_appserveradm),98(_lpadmin),100(_lpoperator),204(_developer),402(com.apple.sharepoint.group.1) requirements