Sadler's Wells; Linbury theatre, Royal Opera House, LondonThe late choreographer's company perform her vibrant 1985 work with a modern-day homage. Plus, a triple bill with a twist from Natalia Osipova Trying to see the past through contemporary eyes is one of the great challenges of dance. It's particularly difficult with the works of the great American pioneers of the postmodern period, the group who gathered at Jud…