Reset index for cluster name between clusterings (lbehnke#25)

There were mixed tabs and spaces. Made it use spaces instead of tabs as that seems to be the convention in most files.

src/main/java/com/apporiented/algorithm/clustering/ClusterPair.java

@@ -22,12 +22,12 @@ public class ClusterPair implements Comparable<ClusterPair> {
 
     private Cluster lCluster;
     private Cluster rCluster;
-	private Double linkageDistance;
+    private Double linkageDistance;
 
     public ClusterPair(){
     }
 
-	public ClusterPair(Cluster left, Cluster right, Double distance) {
+    public ClusterPair(Cluster left, Cluster right, Double distance) {
         lCluster=left;
         rCluster=right;
         linkageDistance=distance;
@@ -53,11 +53,11 @@ public void setrCluster(Cluster rCluster) {
         this.rCluster = rCluster;
     }
 
-	public Double getLinkageDistance() {
+    public Double getLinkageDistance() {
         return linkageDistance;
     }
 
-	public void setLinkageDistance(Double distance) {
+    public void setLinkageDistance(Double distance) {
         this.linkageDistance = distance;
     }
 
@@ -115,7 +115,7 @@ public Cluster agglomerate(String name) {
 
         Double lWeight = lCluster.getWeightValue();
         Double rWeight = rCluster.getWeightValue();
-		double weight = lWeight + rWeight;
+        double weight = lWeight + rWeight;
         cluster.getDistance().setWeight(weight);
 
         return cluster;