Ratter, a fledgling media company that sought to turn local tabloid-style reporting into viral national news, laid off its entire editorial staff Wednesday. The startup, which hired staffers in the Bay Area and Los Angeles since its launch last November, let go “every single byline that was on that site,” founder A.J. Daulerio said. But “It’s not shutting down,” according to Daulerio. Despite its small size — before the lay-offs Ratter only had four full-time writers — the company had garnered media attention. That’s mainly because of the pedigree of its founder, A.J. Daulerio, a Gawker Media veteran best known...