Former New England Patriot Max Lane was the celebrity bartender at the first installment of the 21st Amendment’s August series “Throwback Thursdays — A Summer of Charity.” Tips from the night went to the Alliance for Lupus Research. This Thursday’s fund-raising event will benefit the Boston Bruins Foundation, with retired Bruin Bob Sweeney serving as the celeb behind the bar. Dropkick Murphys fans should visit the 21st Amendment on the 23d when Josh “Scruffy’’ Wallace pours drinks for the Claddagh Fund.