去掉跟踪功能

app/views/messages/_course_show.html.erb

@@ -65,7 +65,7 @@
     <p>由<%= link_to_user_header @topic.author,false,:class=> 'problem_name' %> 添加于<%= format_time(@topic.created_on) %></p>
   </div>
   <!-- <a class="talk_edit fr">删除</a><a class="talk_edit fr">编辑</a><a class="talk_edit fr">置顶</a> -->
-  <%= watcher_link(@topic, User.current) %>
+  <%#= watcher_link(@topic, User.current) %>
 
   <%= link_to(
               l(:button_edit),

app/views/news/_course_show.html.erb

@@ -76,7 +76,7 @@
   <%= link_to image_tag(url_to_avatar(@news.author),:width => 42,:height => 42), user_path(@news.author), :class => "problem_pic fl" %>
   <div class="problem_txt fl mt5">
     <h4 class="r_txt_tit mb5">  <%=h @news.title %></h4>
-    <%= watcher_link(@news, User.current) %>
+    <%#= watcher_link(@news, User.current) %>
     <%= link_to(l(:button_edit),
                 edit_news_path(@news),
                 :class => 'talk_edit fr',