LuAnn Via: The CEO of the Minneapolis-based retailer Christopher & Banks is scheduled to announce her company’s quarterly earnings Wednesday. Via, the former CEO of Payless Shoesource, has been leading a massive turnaround at the company, closing hundreds of stores and overhauling the inventory to stay true to the company’s core customers, which she has described as “middle America.” And her efforts seem to be working: The company ended 2013 in the black for the first time since 2007 and…