SPRINGFIELD — Chicago attorney Alan Mills has a client on the Prisoner Review Board’s clemency docket in April. His hearing has been indefinitely postponed because there is no longer a quorum on the PRB.The client is a contractor who recently remodeled Mills’ law office, the Uptown People’s Law Center, and has a conviction for an old assault. Mills said the client, who he did not identify, didn’t go to prison, but the conviction on his record may impact his ability to get work.“It’s a total disaster,” Mills said.On Monday, …