ReplaceTool selection and sibling index fix (#277)

* Change Selection to newly created instances

* Keep correct sibling index on replace

UOP1_Project/Assets/Scripts/Editor/ReplaceTool.cs

 	/// <param name="replaceObject">Prefab that will be instantiated in place of the objects to replace.</param>
 	internal static void ReplaceSelectedObjects(GameObject[] objectToReplace, GameObject replaceObject)
 	{
-		//Debug.Log("[Replace Tool] Replace process");
+		var newInstances = new int[objectToReplace.Length];
+
+
+
+			var sibling = go.transform.GetSiblingIndex();
+			newInstances[i] = inst.GetInstanceID();
+
-
+			inst.transform.SetSiblingIndex(sibling);
+
 			Undo.RegisterCreatedObjectUndo(inst, "Replacement creation.");
 			foreach (Transform child in go.transform)
 			{
 		}
-		//Debug.LogFormat("[Replace Tool] {0} objects replaced on scene with {1}", objectToReplace.Length, replaceObject.name);
+
+		Selection.instanceIDs = newInstances;
 	}
 }