public/designs/themes/base/footer.html.erb
<div class="container">
<div id="footer-links">
<%= link_to _('Manual'), '/doc', id: "link-to-doc", class: 'icon-help' %>
</div><!-- end id="footer-links" -->
<div id="copyright">
<p><%= (_('This social network uses <a href="http://noosfero.org/">Noosfero</a>, developed by %s and licensed under the <a href="http://www.gnu.org/licenses/agpl.html">GNU Affero General Public License</a> version 3 or any later version.') % link_to('Colivre', 'http://colivre.coop.br/')).html_safe %></p>
</div><!-- end id="copyright" -->
<%= language_chooser(environment) %>
</div>