Updated mediawiki/extensions
Project: mediawiki/extensions/Echo  e374ce8cb2e6a51105ff90c74d527841378647aa

user talk and mention notification improvement

http://www.mediawiki.org/wiki/Echo_%28Notifications%29/Feature_requirements#Improved_Notification_Structure

Change-Id: I2da35e8ed092c42ac95ae34012426834a37c3cde