News roundup: ‘Atlantic’ says N.O has second-worst gun homicide per capita rate in the world … Hornets to announce name change to Pelicans Thursday … House votes to defuse debt limit crisis

Trigger happy: If it were a country, the city of New Orleans would rank second in the world for its rate of gun murders per every 100,000 residents, at 62.1. That's according to a report by The Atlant…