Photo-Illustration: Vulture; Photos: Jamie McCarthy/Getty Images, Scott Garfield/Walt Disney Pictures/Everett Collection Emma Stone doesn’t seem like a gal who would be easily offended, but today W magazine pushed the ever-cool celebrity over the edge. The publication did it by asking if the actress will be playing Miss Piggy in the upcoming Miss Piggy film — written by Cole Escola, the Tony-winning Oh, Mary! playwright — which she’s producing . “First of all, that is the biggest insult to Miss