[#7524] ticket:613 Site admin page for users audit log
[#7524] ticket:613 Track changes to user accounts
[#7524] ticket:613 Don't track activity if neither project or user are provided
[#7524] ticket:613 Add some tests for user account audit
[#7524] ticket:620 Add an index on audit_log.user_id
[#7524] ticket:620 Log password reset and account disabling
[#7524] ticket:620 Use autits helper in tests
[#7524] ticket:620 Change default audit log limit to 25