Fix [2859026] - Window Account Viewer not closed on Log Out

https://sourceforge.net/tracker/?func=detail&aid=2859026&group_id=176962&atid=879332
Add fix for PerformanceDetail

client/src/org/adempiere/apps/graph/PerformanceDetail.java

@@ -53,6 +53,7 @@ public class PerformanceDetail extends CFrame
 		setIconImage(Adempiere.getImage16());
 		barPanel = new Graph(goal, true);
 		init();
+		AEnv.addToWindowManager(this);
 		AEnv.showCenterScreen(this);
 	}	//	PerformanceDetail