Palm Beach Zoo & Conservation Society officials this week unveiled a lush habitat for probably their cutest residents, a trio of tiny golden-fur monkeys and a father-son pair of smiling sloths. The zoo on Thursday opened the new exhibit to the public, a larger enclosure for golden lion tamarins Blitz, Gabriel, and Rosie, and their habitat-mates, Hoffmann’s two-toed sloths named Dustin and Fern…