remove overlay on endsession

WebGde/WebContent/src/endSession/endSession.js

@@ -78,6 +78,7 @@ function createEndSessionWindow(){
 		  }  
 		  else{
 		    	alert("Fields are not empty. Submit or clear fields first.");
+		    	overlay.remove();
 		  }     	   	
 	    		endWindow.style.display = 'none';	 	
 	}