Added a field for experiments db with "fisnihed withput errors"

src/de/tud/kom/p2psim/impl/util/db/metric/Experiment.java

@@ -95,7 +95,7 @@ public class Experiment {
 		this.name = name;
 		this.system = system;
 		this.workload = workload;
-		this.finishedWithoutError = null;
+		this.finishedWithoutError = false;
 	}
 	
 	public Experiment() {