[v6r10] Use JobPolicy for filtering results of JobMonitoring 

NEW: JobPolicy - added getControlledUsers() to get users which jobs can be accessed for a given operation
CHANGE: JobPolicy - optimization of the bulk job access rights evaluation in evaluateJobRights()
NEW: JobMonitoringHandler - use JobPolicy to filter jobs in getJobSummaryWeb()
NEW: new Operations option /Services/JobMonitoring/GlobalJobsInfo ( True by default ) to allow or not job info lookup by anybody.

closes #870