Jump, magic, jump! Friday-Saturday. David Bowie’s turn as the Goblin King in Jim Henson’s 1986 movie “Labyrinth” sowed a decades-long love for the bizzaro modern fairy tale, as well as Bowie’s own, typically ostentatious style in the film (ahem, that codpiece). Now his character gets its own event with this weekend’s The Masque of the Goblin King.