BUG-15076 Edit StageMap Window dosen`t close.

The Edit StageMap wondow dosen`t close because the menu_edit variable was undefined. So, I added a validation to control this issue.

workflow/engine/xmlform/tracker/tracker_Configuration.xml

@@ -72,9 +72,9 @@ var editStagesMap = function(sProcessUID) {
   oPanel.events = {
   	remove: function() { 
   	  delete(oPanel); 
-  	  if(menu_edit.maked === true){
+  	  if(typeof menu_edit != "undefined" && menu_edit.maked === true){
   	      menu_edit.remove();
-  	  } else if (menu_add.maked === true) {
+  	  } else if (typeof menu_add != "undefined" && menu_add.maked === true) {
   	      menu_add.remove();
   	  }
   	}.extend(this)