Build-A-Bear is the improbable tale of a beloved brick-and-mortar brand with staying power.In this age of e-commerce, a brick-and-mortar retail chain making customized stuffed animals might sound like a business model that's barely hanging by a thread. But that couldn't be further from reality for Build-A-Bear Workshop (BBW +3.43%).Build-A-Bear is flourishing, the business is growing, and long-term investors have enjoyed plush returns. Over the past five years, Build-A-Bear stock has outperformed the likes ...