fix some missing chinese translation

app/views/admin/users_new_interface/index.html.erb

@@ -44,9 +44,9 @@
     <thead>
       <tr class="sort-header">
         <th class="gender"></th>
-        <th class="span3"><a href="#">Roles</a></th>
-        <th class="span4"><a href="#">Name</a></th>
-        <th><a href="#">Mail</a></th>
+        <th class="span3"><a href="#"><%= t('roles') %></a></th>
+        <th class="span4"><a href="#"><%= t('name') %></a></th>
+        <th><a href="#"><%= t('email') %></a></th>
       </tr>
     </thead>
     <tbody>