Task #9607: (work by ruud beukema, commit by schaap) Added visual indication to tasks that are blocked by predecessors, and added functionality for selecting them (e.g. for rescheduling)

Task #9351: merged branch Webscheduler-Task9349 (c34667) via trunk into this branch because I need the angular contextmenu which was developed there

Task #9309: added views resource_allocation.resource_claim_conflict_reason_view and resource_allocation.task_conflict_reason_view

Task #9309: added conflict_reasons, task and resource_claim relations. Added initial storage and bandwith set of conflict reasons. Added triggers to ensure db consistancy on task and resource_claim conflict status

Task #8887: added view resource_monitoring.resource_view which shows availability and capacity of resources

Task #8570: renamed dir from ResourceAssignmentDatabase to ResourceAssignmentDatabase.from_branch_to_prevent_svn_conflict to prevent svn EvilTwin merge conflict. Rename back on trunk.

Task #8570: added tables resource_allocation.resource_claim_property_type and resource_allocation.resource_claim_property as replacement for nr_of_parts. Added view resource_allocation.resource_claim_property_view

Task #8570: added virtual_instrument.resource_view and resource_allocation.resource_claim_extended_view

Task #8570: added virtual_instrument.resource_view and resource_allocation.resource_claim_extended_view

Task #8570: added nr_of_parts to resource_claim. For example if you claim 10 1G files then the claim_size is 10GB and the nr_of_parts is 10