implementing per-task maxinstances (and thus procect against double exec)
adding timestamps and duration to taskrequest
tasks requests model and views
moved ParamSet to libqtssu
supporting new %! parameters substition for alerts and tasksrequests

when processing an alert:
%!alertid %!alertdate

when processing a task/taskrequest:
%!taskid %!fqtn %!taskgroupid %!taskrequestid %!runningms
%!runnings %!queuedms %!queueds %!returncode %!status
%!submissiondate %!startdate %!enddate %!target