Update Catalyst images to have them in 200ppi and not blurry anymore
- fix ParaView issues 19031 (paraview#19031 (closed))
- re enable Catalyst image testing
- use imagemagick to rescale and change image dpi ($ convert -resize 400% -density 200 )
- some image have been converted to jpg to reduce the file size
Edited by Mathieu Westphal (Kitware)