VTK-3389 - remove '#' when no hash params in admin preview if HTML5 history is supported
VTK-3389 - remove '#' when no hash params in admin preview if HTML5 history is supported

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