A deaf girl has been given the go-ahead to pursue her claim that the Girl Scouts violated federal law by denying her request for a sign language interpreter and then disbanding her troop.The 7th U.S. Circuit Court of Appeals revived a lawsuit filed by Edie Runnion on behalf of her daughter, Megan, under the Rehabilitation Act against the Girl Scouts of Greater Chicago and Northwest Indiana.Section 504 of the Rehabilitation Act prohibits private organizations that receive federal funds from discriminating against disabled …