0022761: Users Report should not report user "-"
Migrated from: https://tracker.clearos.com/view.php?id=22761
Reported by: Nick Howitt
Currently the Users report reports against all transactions in the proxy access log. Most TCP_DENIED messages are not attributed to a user and, instead get attributed to the user "-". these should be filtered out from the proxy USERS report as they can dominate the pie chart making it useless to read.