VTK-3457 - accessibility: add roles 'status' to ajax info messages and 'alert' to ajax error messages
VTK-3457 - accessibility: add roles 'status' to ajax info messages and 'alert' to ajax error messages

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