The gorgeous Martha's Vineyard getaway where Barack and Michelle Obama used to spend their summers has found a buyer - just six weeks after it was put on the market for $39 million. Known as Blue Heron Farm, the sprawling Massachusetts property played host to the Obamas for three consecutive summers starting in 2009, with reports at the time suggesting that the family paid a staggering $50,000 a week to rent the abode. But the family was forced to find an alternative summer sanctuary when the Chilmark, MA, home was sold to a new owner—who carried out extensive renovations on...