The premiere of English National Ballet’s Raymonda comes with the news that director Tamara Rojo is moving on, taking up the directorship of San Francisco Ballet. Marius Petipa’s 1898 ballet has an appealing Glazunov score and some terrific dancing, wrapped up in a nonsense plot about Crusaders and Saracens. In Raymonda’s best-known solo, her floating steps seem tugged by the …