At 11 am, Daire Hickey stood alone at the back of Court 29, waiting to be called to the witness box. But the evidence in the bitter Web Summit shareholder oppression dispute never began. Before that could happen, Mr Justice Michael Twomey made an impassioned plea for the parties —Web Summit CEO Paddy Cosgrave and minority shareholders Daire Hickey and David Kelly—to attempt to mediate a settlement.  He said, unusually and wisely for a case such as this, the procedures adopted meant last week he got to hear all sides of the story before the evidence began in opening and…