Dollar General opens its 14th distribution center located at Janesville, Wisconsin   Major retailer invests $100 million and creates more than 500 jobs to support Midwest stores GOODLETTSVILLE, Tenn., 2017-Jun-05 — /EPR Retail News/ — This morning (June 03, 2017), nearly 1,000 Dollar General (NYSE: DG) employees, their families and company executives were joined by U.S. House Speaker…