VTK-2551 - hide create-dialog and display ajax icon until finished loadding/traversing tree
VTK-2551 - hide create-dialog and display ajax icon until finished loadding/traversing tree

vtkio/vtk,vtkio/vtk,vtkio/vtk,vtkio/vtk,vtkio/vtk,vtkio/vtk,vtkio/vtk,vtkio/vtk