Recession's over ... so who forgot to tell diners? By: CNBC.com News December 18, 2013 at 07:00 AM EST Despite aggressive promotions, stagnant sales at sit-down restaurants continue to zap overall industry growth. Read More >> Related Stocks: Chipotle Mexican Grill Darden Restaurants Dine Brands Global, Inc. Noodles & Company Piper Jaffray Companies