Photo courtesy Pronto   All the news that’s fit to nosh.  Taco the Town: Love the customizable menu, fast service and efficiency of Chipotle, but long to support a local restaurant over a chain? East Valley institution Serrano’s Mexican Restaurants has a new fast-casual concept for you. Pronto will open in Serrano’s Tempe location (6440 S. Rural Rd.) this fall. “We’ve learned a lot over the past two years, and we know that fast-casual concepts have experienced significant recent growth,” says CEO Ric Serrano. “Our Pronto concept will offer...