修复课程中，对动态进行筛选的页面呈现方式

app/views/courses/show.html.erb

@@ -9,7 +9,23 @@
 <input type="hidden" value="<%= @type%>" name="type" id="user_activities_type">
 <div class="homepageRight mt0 ml10">
 <div class="homepageRightBanner">
-  <div class="NewsBannerName">班级动态</div>
+  <div class="NewsBannerName">班级动态
+  <% if params[:type] == "homework" %>
+    <%= ">作业动态" %>
+  <% elsif params[:type] == "news" %>
+    <%= ">通知动态" %>
+  <% elsif params[:type] == "attachment" %>
+    <%= ">资源库动态" %>
+  <% elsif params[:type] == "message" %>
+    <%= ">论坛动态" %>
+  <% elsif params[:type] == "journalsForMessage" %>
+    <%= ">留言动态" %>
+  <% elsif params[:type] == "poll" %>
+    <%= ">问卷动态" %>
+  <% else %>
+    <%= ">全部动态" %>
+  <% end %>
+  </div>
   <ul class="resourcesSelect">
     <li class="resourcesSelected"><a href="javascript:void(0);" class="resourcesIcon"></a>
       <ul class="homepagePostType">