Updated mediawiki/extensions
Project: mediawiki/extensions/PubSubHubbub  02d0d6213ca399aa35d2ed51b38b14c90ee80f7d

Fixed whitespace in license text.
Fixed global ExtensionCredits variable.
Fixed autoloading publisher class.

Change-Id: I2834ca3b64d47d0160314cbae68992adc6d30cea