Two exhibitions, both dedicated to Picasso, are now open in Marseille as part of the ‘Picasso-Méditerranée 2017-2019′ cultural programme. (These join the other Picasso-orientated shows, which I list further down this post.) ‘Picasso et Les Ballets Russes, entre Italie et Espagne’ focuses on four productions by Serge Diaghilev for which …