This documentary about a new director's tenure at the Paris Opera Ballet purports to tell all but offers no real insightsNot so much a documentary, more a sleek two-hour commercial for itself, Reset is a glossily produced non-look behind the scenes at the Paris Opera Ballet. (The original title is Rèleve: histoire d'un création " "rèleve" meaning the dancer rising on tiptoe). In 2014 a new director took over the c…