By Tom Keyser, Times Union On Saturday, the day before screening “Project Nim,” the Crandell Theatre will celebrate the one-year anniversary of its reopening. It will mark the occasion by showing Buster Keaton’s 1926 classic silent film “The General” and a short silent film from 1927 called “Dog Shy.” Bernie Anderson will provide live piano accompaniment to both films. The movies start at 7 p.m., and admission is pay-what-you can. The money will go toward the ongoing restoration of the theater, operated for a year now by the Chatham Film Club. The club bought the Crandell after its longtime owner-operator Anthony Quirino died suddenly in January 2010, prompting fears that the theater, a beacon on Chatham’s Main Street, would close forever. It closed for half a year, reopening last July 9 under the new ownership. Peter Biskind, the author and…