The Atlanta Braves just sped up everyone’s redevelopment plans in the Cumberland Galleria area. In a stunning move, the Braves Monday said they will build a nearly $700 million stadium and mixed-use development at Interstates 75 and 285 — 60 acres just north of Galleria Office Park, Cobb Cobb Galleria Centre and other familiar, and sometimes aging, projects dotting the skyline of the northwest Atlanta Perimeter...