Fixed the calculation of the clustering-costs and display it

.../de/hhu/ba/yoshikoWrapper/graphModel/YoshikoSolution.java

...e/hhu/ba/yoshikoWrapper/swing/components/SolutionTab.java

.../yoshikoWrapper/yoshikoAlgorithm/ClusteringAlgorithm.java

...u/ba/yoshikoWrapper/yoshikoAlgorithm/GraphTranslator.java

...koWrapper/yoshikoAlgorithm/YoshikoAlgoritmController.java

...e/hhu/ba/yoshikoWrapper/yoshikoAlgorithm/YoshikoEdge.java