VTK-1156 setting alt-tag for introduction images in article- and eventlisting to caption if set.
VTK-1156 setting alt-tag for introduction images in article- and eventlisting to caption if set.

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