A federal appeals court has made it easier for alleged victims of poor jail conditions or police misconduct to prove their cases.The 7th U.S. Circuit Court of Appeals held a pretrial detainee who contends he received substandard medical care in the Cook County Jail may use a 2008 U.S. Justice Department report to bolster his claim.The report found that systemic problems with the jail’s scheduling, record keeping and grievance processes had led to unconstitutionally inadequate health care for prisoners.The 7th Circuit …