title: smartgwt - two neighbour panels (vlayouts) is not resizable
body: <p>I've got a gwt project which contains two Vlayouts(dialogVLeftPanel, dialogVRightPanel). That Vlayouts contain a treegrid, like at code below:</p>
  
  <pre><code>/////////// drzewo użytkowników
          userViewTree = new Tree();  
          userViewTree.setModelType(TreeModelType.PARENT);  
          userViewTree.setIdField("UserViewId");  
          userViewTree.setParentIdField("ReportsTo");  
          userViewTree.setNameProperty("Użytkownicy");  
          userViewTree.setRootValue(1);  
          userViewTree.setData(userViewData);  
  
          TreeGrid userViewTreeGrid = new TreeGrid();  
          userViewTreeGrid.setHeight(600);
          userViewTreeGrid.setWidth(185); 
          userViewTreeGrid.setShowOpenIcons(false);  
          userViewTreeGrid.setShowDropIcons(false);  
          userViewTreeGrid.setClosedIconSuffix("");  
          userViewTreeGrid.setFields(new TreeGridField("Użytkownicy"));  
          userViewTreeGrid.setData(userViewTree);
          userViewTreeGrid.getData().openAll();  
          dialogVLeftPanel.addMember(userViewTreeGrid);
  
          ///////////////////////////////////////////////////
          //////////////drzewo uprawnień/////////////////////
          ///////////////////////////////////////////////////
          Tree userTree = new Tree();  
          userTree.setModelType(TreeModelType.PARENT);  
          userTree.setRootValue(1);  
          userTree.setNameProperty("Uprawnienia");  
          userTree.setIdField("userId");  
          userTree.setParentIdField("ReportsTo");  
          userTree.setOpenProperty("isOpen");  
          userTree.setData(userData);  
  
  
          final TreeGrid userTreeGrid = new TreeGrid();  
          userTreeGrid.setHeight(600);  
          userTreeGrid.setWidth(630);
          userTreeGrid.setShowOpenIcons(false);  
          userTreeGrid.setShowDropIcons(false);  
          userTreeGrid.setClosedIconSuffix("");  
          userTreeGrid.setData(userTree);  
          userTreeGrid.setSelectionAppearance(SelectionAppearance.CHECKBOX);  
          userTreeGrid.setFields(new TreeGridField("Uprawnienia"));  
          userTreeGrid.setShowSelectedStyle(false);  
          userTreeGrid.setShowPartialSelection(true);  
          userTreeGrid.setCascadeSelection(true);          
          dialogVRightPanel.addMember(userTreeGrid);  
  </code></pre>
  
  <p>I wanna put the resisable bar between that Vlayouts, because I wanna change both width when I wish to do it.
  When I put that code:</p>
  
  <p>userTreeGrid.setShowResizeBar(true);<br>
  The resize bar is visible, but it is on the bottom of Vlayout and can only shorten the panel. If I wanna make wider the panel - it is not working. 
  How could I solve my problem?</p>
  
  <p>Thank you for any help!</p>