refactored user_workload to allocate 1 unit per request, not 1 unit per specimen; added totals and percentages cdata to user_workload; moved user_workload query back to RDBO from dbix}
git-svn-id: https://jti.org.uk/svn/hmds_lims/trunk@1528 4177bd82-f056-0410-812d-caef170e3fa0
