I saw “Minions” accompanied by Mertmas and four of his friends as part of a 9th Birthday treat, so here’s their perspective: “Minions” pretty much hits its target market spot on. The Minions themselves retain their goofy adorability and their mix of slapstick comedy and inferred verbal repartee still amuses, as do moments of potty humour. Although it sags in the middle, the finale manages to kick…