By Jane Vranish / Pittsburgh Post-Gazette Choreographer Elisa-Marie Alaio had a secret. She recently revealed an eight-year struggle with an eating disorder at a benefit for The Emily Project, a national organization that has opened a branch in the Pittsburgh area to help both men and women. But that struggle has made her stronger when it comes to “accepting my body, who I am and my image, and not constantly wanting to improve it,” she says. That strength has added a taut dra