'Tis the season for art holiday parties! MoMA throws a silent disco to get “The Clock” ticking. The Whitney unveils Calder, O’Keeffe and more “American Legends.” Guests get starry-eyed at AMNH’s Solstice Party and Matt Freedman and Mike Ballou light up Studio 10 for a festive exhibition. All that jazz and more, on this week’s art scene.