mozilla/bedrock — pull request #289 by glogiotatidis (2012-07-27 13:41:30+00:00)
Title: [fix bug 765783] Implement callback url support.

- For each successful subscription in /contribute we POST to
callbackurl GET parameter if available.

- Added /contribute/event/ page that renders the same page as
/contribute but returns user to the same page after successfull
subscription, so a new user can directly join.