Task #10902: various bug fixes and enhancements

SAS/DataManagement/StorageQueryService/cache.py

SAS/DataManagement/StorageQueryService/diskusage.py

SAS/MoM/MoMQueryService/MoMQueryServiceClient/momqueryrpc.py

SAS/ResourceAssignment/ResourceAssigner/lib/assignment.py

SAS/ResourceAssignment/ResourceAssignmentDatabase/radb.py

...ssignmentDatabase/radb/sql/add_functions_and_triggers.sql

...entEditor/lib/static/app/controllers/cleanupcontroller.js

...gnmentEditor/lib/static/app/controllers/datacontroller.js

...tor/lib/static/app/controllers/ganttresourcecontroller.js

...gnmentEditor/lib/static/app/controllers/gridcontroller.js

...urceAssignment/ResourceAssignmentEditor/lib/webservice.py

SAS/ResourceAssignment/ResourceAssignmentService/rpc.py

SAS/ResourceAssignment/ResourceAssignmentService/service.py