Wrexham will play in the second tier of English football for only the second time in their history [Rex Features]The party at the Stok Cae Ras was in full swing on Saturday night as Wrexham sealed an unprecedented third successive promotion.Wycombe Wanderers' 1-0 loss to Leyton Orient earlier in the day paved the way for Phil Parkinson's side to open up an unassailable advantage over the chasing pack in League One if they could beat Charlton Athletic.It was an opportunity they grasped as Ollie R