The mother of a missing Maine toddler and her supporters screamed at the girl’s father after a court hearing where he pleaded guilty to an unrelated charge. Justin DiPietro, father of Ayla Reynolds, was sentenced Wednesday to four days in jail for violating conditions of his release on an unrelated assault charge. As he walked out of the Portland courthouse with his lawyer, Trista Reynolds and about a dozen supporters started running after him. DiPietro and his court-appointed lawyer, Gerard Conley Jr., ducked into the police station where the crowd surrounded them. They called him names, including ‘‘murderer’’ and shouted ‘‘Where’s Ayla?’’ Ayla Reynolds disappeared in December 2011. She is presumed dead.