Railtown Tailgate Summer Barbecue // August 25   After a two-year hiatus, Railtown Cafe’s perennially sold-out Saturday al-fresco-style Tailgate Barbecues are back for two exclusive events at their original location in the heart of Vancouver’s historic Railtown District on August 18 and 25 from 4 to 9 p.m. Railtown Chefs and Co-Owners Dan Olson and Tyler Day will fire up their custom-built, 12-foot smoker/barbecue barrel to heap plates high with mouthwatering, slow-smoked brisket and pork shoulder and beer-brined chicken and…