Lowry, Salford The tale of a Burnley businessman who gives his town a financial leg-up overeggs the north-south cultural divide, but Pippa Cleary’s bright musical numbers propel the positivityWas ever a musical so eager to be liked, so anxious not to exclude? It is not just the patronising pre-show introduction, which assumes we have never been in a theatre and insists we all hate bankers. It is also the pathologic…