Adds email notifications support for news comments (#2074).

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@5003 e93f8b46-1217-0410-a6f0-8f06a7374b81

lib/redmine/notifiable.rb

@@ -14,6 +14,7 @@ module Redmine
       notifications << Notifiable.new('issue_status_updated', 'issue_updated')
       notifications << Notifiable.new('issue_priority_updated', 'issue_updated')
       notifications << Notifiable.new('news_added')
+      notifications << Notifiable.new('news_comment_added')
       notifications << Notifiable.new('document_added')
       notifications << Notifiable.new('file_added')
       notifications << Notifiable.new('message_posted')