Updated mediawiki/extensions
Project: mediawiki/extensions/GettingStarted  247295656dfce0fa1cd4d134b02c3d8f14054672

Fix onConfirmEmailComplete class_exists check

Was checking for EchoNotifier and then using EchoEvent. Didn't make
sense...

Change-Id: I6fb1eed422f26f4fa0cee459218ee6557a4d4c75