added extra_js block

uitwww/templates/layout.html

@@ -13,7 +13,7 @@
 # GNU Affero General Public License for more details.
 #
 # You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
 #}
 
 {% from "macros.html" import nav_item with context %}
@@ -244,5 +244,7 @@
 
 <script type="text/javascript" src="https://static.ubuntu-it.org/themes/italy/theme.min.js"></script>
 
+{% block extra_js %}{% endblock %}
+
 </body>
 </html>