Add feedback widget for uservoice

[kimmanis]

Uservoice embed code.

<script type="text/javascript"> var uvOptions = {}; (function() { var uv = document.createElement('script'); uv.type = 'text/javascript'; uv.async = true; uv.src = ('https:' == document.location.protocol ? 'https://' : 'http://') + 'widget.uservoice.com/C9m4NTTgFIwilLjGqKLEkg.js'; var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(uv, s); })(); </script>