Kitschy, cool Vagabond Motel coming back to life on Biscayne Boulevard’s MiMo district BY ANDRES VIGLUCCI VIGLUCCI@MIAMIHERALD.COM After years in a sad limbo behind a construction fence, the sirens and porpoises at the marvelously waggish Vagabond Motel are looking decidedly chipper under a fresh coat of paint. The re-plumbed fountain will soon come back to…