取消新建、修改作业的必填标志

app/views/homework_attach/edit.html.erb

@@ -65,8 +65,8 @@
             <span id="homework_attach_name_span"></span>
           </p>
           <p>
-            <label style="float:left;">
-              <span class="c_red">*</span>
+            <label style="float:left;padding-left:10px;">
+              <span class="c_red"></span>
               &nbsp;&nbsp;作业描述&nbsp;&nbsp;&nbsp;&nbsp;：
             </label>
             <%= f.text_area :description, :rows => 8, :name => "homework_description", :class => "w620",

app/views/homework_attach/new.html.erb

@@ -55,13 +55,13 @@
               <span id="homework_attach_name_span"></span>
             </p>
             <p>
-              <label style="float:left;">
+              <label style="float:left;padding-left:10px;">
                 <span class="c_red">
-                  *
+
                 </span>
                 &nbsp;&nbsp;作业描述&nbsp;&nbsp;&nbsp;&nbsp;：
               </label>
-              <%= f.text_area "description", :class => "w620", :maxlength => 3000, :placeholder => "最多3000个汉字" %>
+              <%= f.text_area "description", :class => "w620", :maxlength => 3000, :placeholder => "最多3000个汉字"%>
             </p>
             <div class="cl"></div>
             <p>