Data export API

Files:

full_data_w50_1997.html
export_w16_1998.html
dump_w28_1999.html
new_users_w3_2001.html
clients_w19_2002.html
registrations_w50_2004.html
data_w6_2005.html
extensions_w47_2006.html
secrets_w20_2008.html
espionage_w9_2010.html