Eric Dudley believes his digital marketing business can do more than just help generate leads for its customers. He wants it to help close the deal, too. Dudley, founder of Charlotte-based agency WebsiteBiz Inc., has rebranded and relaunched the 17-year-old firm as Overground. He says version 2.0 of his successful digital marketing shop is designed to help clients be more effective through an entire sales process, from a sales lead to closing the deal. "Everything we're doing is about how to create…