router corrected not to assign operators to machines that are offshift

dream/simulation/OperatorRouter.py

@@ -254,7 +254,7 @@ class Router(ObjectInterruption):
         for entity in G.pendingEntities:
             # if the entity resides in a machine that waits for load operation
             if entity.currentStation in G.MachineList:
-                if entity.currentStation.broker.waitForOperator:
+                if entity.currentStation.broker.waitForOperator and entity.currentStation.checkIfActive():
                     self.pendingMachines.append(entity.currentStation)
                     self.pending.append(entity)
             # otherwise proceed only if the entity is at the head of the "queue" it resides