bugfixes - cannot use DateTime->now default in DB::Request for new request as DB classes loaded once so new request fails on turn of year unless server restarted; activity data requests without referral source list trial name if exists}
git-svn-id: https://jti.org.uk/svn/hmds_lims/trunk@1431 4177bd82-f056-0410-812d-caef170e3fa0
