Sysadmin Counting for Balsamiq License When Added to 'balsamiq-mockups-editors' group

It seems that adding the 'sysadmin' user to the 'balsamiq-mockups-editors' group makes the user count for the license.

This user is used by support and we sometimes add it to groups to test, for example, permissions.

The customer should be protected from having this user be added to license, specially because they cannot use it.