>> It’s the first night of Hanukkah, so if you’re not celebrating with family and friends at home, consider catching the Sinai Mountain Boys, a Maryland combo that melds the speedy strumming and twanging of bluegrass with Orthodox Jewish melodies. They’ll be offering an hour of unique sounds for free beginning at 6 p.m. at the Kennedy Center Millennium Stage. >> The Washington Jewish Film Festival presents Diane Crespo and Stefan Schaefer’s Arranged, the…