So President Barack Obama and First lady Michelle Obama opened up the White House to trick-or-treaters on Saturday, which is pretty cool. Kids from 11 D.C. area schools were invited to come by and meet the first couple as they handed out this administration’s version of a Halloween treat: White House M&Ms, a sugar cookie, and … you guessed it, dried fruit. Talk about boo. Michelle is clearly dressed up for the holiday here,…