Cook County Jail officials violated the rights of an inmate with a prosthetic leg by failing to always place him in a cell that had a toilet with grab bars, a federal judge held.In a written opinion last week, U.S. District Judge John Z. Lee concluded this failure denied James Roberts the ability to use the toilet on an equal basis with his nondisabled counterparts.Lee granted summary judgment in favor of Roberts on claims related to toilet access that he brought under the Americans with Disabilities Act and the …