“Never Standing Still” is not only the motto of Hong Kong Ballet, but a phrase that one person employs after another when asked about working with artistic director Septim Webre. “It was written for me!” says Webre himself, with his characteristic raucous laugh. “It was a year or two before me, but it’s fitting enough!” I watch him rehearse his new production of The Nutcracker, which will premiere on December 11 at the Grand Theater at the Hong Kong Cultural Center in Sim Sha Tsui, Kowloon. , He is….