mailr/app/views/shared/_folders.html.erb

<div id="folders">
  <h4><%=_('Folders')%><br/><%= link_to 'add/edit', folders_path %></h4>
  <hr/>
  <ul> <% for folder in @folders %>
    <li><%=folder_link(folder)%></li> <% end %> 
  </ul>
</div>
<div style="text-align: center; padding: 10px;">
  <input type="button" value="<%= _('Logout')%>" onclick="window.location='/login/logout'">
</div>