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

app/views/mailer/news_comment_added.text.html.rhtml

@@ -0,0 +1,5 @@
+<h1><%= link_to(h(@news.title), @news_url) %></h1>
+
+<p><%= l(:text_user_wrote, :value => h(@comment.author)) %></p>
+
+<%= textilizable @comment, :comments, :only_path => false %>