DJs spinning old-time jazz, 200 choices of whiskey, and a dark mellow vibe with a twist of a thirty something crowd is making the old Clifton's Silver Spoon location another reason downtown nightlife is coming abuzz. Seven Grand, named after its nearest intersection, just opened this month and it feels as if it has been here for ages. Compared to the generalized and typically terse doormen, cocktail waitresses and bartenders of Hollywood, Grand's staff......