This victory has been a long time coming for Gary O’Neil. The Millwall supporter from Beckenham had picked up a solitary point on his previous five trips to this part of south London as a manager so it was no wonder that he celebrated Zian Flemming’s winning goal in the 90th minute with the same gusto as the travelling Ipswich supporters. On a topsy-turvy afternoon that saw Palace take the lead before Emersonn and Leif Davis cancelled out Anan Khalaili’s first goal for Crystal Palace after Axel…