SPRINGFIELD — The soulful voices of a gospel quartet filled the statehouse’s Hall of Governors Monday where former Gov. Patrick J. Quinn unveiled his official portrait.Surrounded by family and supporters, Quinn revealed an image of himself that also paid tribute to his loved ones and highlighted some of his major achievements during the six years he spent in office.“I think that is hopefully what our portrait is focused on,” Quinn said. “It’s focused on getting involved, being involved …