rm -rf var/generation/
rm -rf pub/static/frontend/
rm -rf pub/static/_requirejs/frontend/
rm -rf var/view_preprocessed/
rm -rf var/cache/
rm -rf var/page_cache/
php bin/magento setup:upgrade
php bin/magento setup:static-content:deploy
php bin/magento cache:flush
sudo service varnish restart

<reference name="head">
   <block type="core/text" name="google.cdn.jquery">
      <action method="setText">
        <text>
           <![CDATA[<script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js"></script><script type="text/javascript">jQuery.noConflict();</script>]]>
        </text>
      </action>
   </block>
</reference>