The Newhouse family sold the 182-year-old daily The Times-Picayune and its website, nola.com, to a scrappy New Orleans competitor, and the entire staff is being laid off. That has stirred worries across the other papers in the family’s Advance Publications empire. A total of 161 staff members are being laid off, according to a WARN (Worker Adjustment and Retraining Notification Act) notice filed with the Louisiana Workforce Commission, which listed 65 reporter and editor jobs in the bloodbath. John and Dathel Georges, the husband-and-wife team that owns the rival New Orleans Advocate, are buying The Times-Picayune from Newhouse’s Advance Local,...