Sentinel editor to be replaced by corporate manager; Gwen Ifill, Judy Woodruff to co-anchor PBS "NewsHour"; to Jeff Bezos: "good on diversity" won't be good enough; ESPN co-hosts in skirmish at NABJ convention party; Univision gets $500,000 grant for investigative journalism; Ebony devotes issue to Trayvon Martin — features 4 covers; Latinos disproportionately among suspended players; Johnny Depp blames critics for failure of "Lone Ranger"; Soul of the South network debuts daily newscast; C-SPAN looks at role of black soldiers in Civil War (8/7/13)