Added InternalInterpreter flag to DBInterpreterProcessed

models/processed.go

@@ -109,6 +109,7 @@ type DBInterpreterProcessed struct {
 	BookingReference          *int
 	BillableInterpreter       bool
 	BillableTpa               bool
+	BillableInternal          bool
 
 	// FLAGS / METADATA:
 	// ---