Wildfire on edge of Los Angeles forces evacuationsA wildfire on...  Wildfire on edge of Los Angeles forces evacuations  A wildfire on the northwest edge of Los Angeles spread rapidly on Saturday despite light rainfall a day after it forced the evacuation of hundreds of residents and triggered the closure of a major highway.  Fire officials told residents of about 200 houses in northwest Los Angeles and nearby Burbank to leave their homes on Friday as the so-called La Tuna Fire tore through…