Romelu Lukaku got the goal he probably expected and Ross Barkley the goal he definitely needed as Everton signalled an important step in their development under Ronald Koeman. A 2-0 lead against West Ham United was the cue for Everton to implode at Goodison Park last season . Only Slaven Bilic’s defence collapsed this time out. Everton found relief not only in a first win in six matches but in the contribution of Barkley, who was involved in the breakthrough, started…