facebook/wordpress — pull request #327 by niallkennedy (2012-11-29 19:50:51+00:00)
Title: Save app access token when app info saved

Verify application ID and secret by requesting an [App Access Token](https://developers.facebook.com/docs/technical-guides/opengraph/publishing-with-app-token/) from Facebook. Store the value for later use without needing access tokens specific to each authorized Facebook user.

Remove app namespace from the form; parse from the response instead.

App Access Token, like Social Publisher in general, only works if the server supports requests to remote servers such as Facebook.com over HTTPS. If the server does not support HTTPS the app namespace is retrieved from information about the application identifier returned by Facebook.