Added functionality: a trip can be exported to a zip file. The details of a trip, the dayprograms, tripperbadges and bingoanswers will be written to a single zipped html page. You could then open the html page in your browser, save as pdf and archive it.
Improved look: after feedback from the family the way bingo works and looks is now a bit different. Each logged on user will first see all the bingocards and can see his own uploaded photo per bingocard. At the bottom of that page you can also see how many bingo answers somebody else has uploaded and you could go to see the bingocards with the answers of all trippers.