BUG 6525 Add a "Last Name" column to the screen to assign users to groups

improving the code

workflow/engine/templates/groups/groupsMembers.js

@@ -451,6 +451,7 @@ CancelEditMembersAction = function(){
   buttonsPanel.hide();
   editMembersButton.enable();
   MembersPanel.doLayout();
+  assignedGrid.setWidth(Ext.getBody().getWidth(true));
 };
 
 //Render Status