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 %>

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

@@ -0,0 +1,6 @@
+<%= @news.title %>
+<%= @news_url %>
+
+<%= l(:text_user_wrote, :value => @comment.author) %>
+
+<%= @comment.comments %>

app/views/news/show.rhtml

@@ -1,4 +1,5 @@
 <div class="contextual">
+<%= watcher_tag(@news, User.current) %>
 <%= link_to(l(:button_edit), 
       edit_news_path(@news),
       :class => 'icon icon-edit',