An Attorney Registration & Disciplinary Commission Review Board has upheld another panel’s finding that a Quad Cities attorney engaged in misconduct when he allegedly mishandled about $12,000 and forged the signature of an associate at his firm to hide evidence he was dating a client.The review board in a report filed Thursday agreed with a hearing board that called for Stephen T. Fieweger, 55, of Stephen Fieweger P.C. in Davenport, Iowa, to be disciplined for allegedly failing to safeguard funds and engaging in …