CoreObject updated to facilitate the signalling of the Router if the receiver to be preempted is operated

Router clean-up. conflictingOperators, conflictingEntities, occupiedReceivers and entitiesWithOccupiedReceivers lists added to Router

Broker invokes router before requesting a resource if it handles already an entity. Routed updated to handle the use case

signalReceiver corrected. Controls if the receiver has to be loaded or setup before signalling the router

signalReceiver of QueueManagedJob now sorts for the operator assigned to the Receiver the Queue before signalling

appendEntity method adds newly created entities to G.pendingEntities and warms them according to the status of the next stations

machine checkOperator method checks if the machine is assigned an operator. assignedOperator flag informs if the machine has already an operator assigned