It is not too difficult to stage Verdi’s ever-popular tear-jerker “La Traviata.” Francesco Maria Piave’s libretto and stage directions are so detailed any director with access to a few lengths of velvet and some stock chandeliers can create a plausible mis-en-scène to serve Verdi’s marvelous, emotive music. French director Jean-François Sivadier, whose operatic resumé is shorter than a Rossini semiquaver, {…}