Salford Red Devils are bottom of Super League after a troubled start to the season [Getty Images]Salford Red Devils chief executive Chris Irwin has resigned from his post with immediate effect.Irwin only took on the job in February when a consortium led by Swiss businessman Dario Berta completed an eve-of-season takeover of the Super League club.However, the Red Devils have been beset by problems in the ensuing period with issues over unpaid wages and key player departures.They sit bottom of Sup