Print Syndicate LLC, which has racked up plenty of investment and accolades in its short life, is adding a noted business mind to its brain trust. Former L Brands Inc. executive and Harvard Business School professor Leonard Schlesinger joined the board of the apparel and home goods e-commerce retailer. "We needed someone who's seen all the (stuff) before," CEO Tanisha Robinson told me, a bit more colorfully than I can print. The Columbus-based company, which operates through buzzworthy websites…