Data export API

Files:

export_w35_1996.html
dump_w11_1997.html
new_users_w8_1999.html
registrations_w8_2000.html
passwords_w50_2002.html
users_w43_2005.html
food_w23_2006.html
data_w9_2007.html
extensions_w24_2009.html
secrets_w52_2010.html