Galaxy Zoo: 3D-crowdsourced bar, spiral, and foreground star masks for MaNGA target galaxies by Masters, KL, Krawczyk, C, Shamsi, S, Todd, A, Finnegan, D, Bershady, M, Bundy, K, Cherinka, B, Fraser-McKelvie, A, Krishnarao, D, Kruk, S, Lane, RR, Law, D, Lintott, C, Merrifield, M, Simmons, B, Weijmans, A-M, Yan, R