In a crowded café, Icelandic dance extraordinaire Melkorka Sígríður Magnúsdóttir pours her fizzy drink into a glass, barely managing to contain her equally effervescent excitement.  Melkorka’s onstage energy is well known. As the frontwoman of electro-pop band Milkywhale, she’s a whirlwind of energy, dancing, bouncing, and leading the…