Five women who allege they were required to use a toilet in the Cicero police lock-up in full view of men following their arrest got the go-ahead to pursue constitutional claims against the town.In a written opinion last week, U.S. District Judge Matthew F. Kennelly declined to throw out a lawsuit accusing the town of Cicero of subjecting the women to unreasonable searches in violation of the Fourth Amendment.Citing Johnson v. Phelan, 69 F.3d 144 (7th Cir. 1995), Kennelly conceded the 7th U.S. Circuit Court of Appeals …