Demian Bulwa at the Chronicle reports on some depressing info found in the search warrant affidavits filed in court by police in the Halloween murder of Ichinkhorloo "Iko" Bayarsaikhan. The teenagers who supposedly gunned down "Iko" bragged about shooting her soon after they fled the scene on an AC Transit bus back to Oakland. According to the story: As the youths rode an AC Transit bus back to Oakland afterward, one of the suspects......