Moved feedback script to _scripts-include.jade

Author: teresahu

public/_includes/_scripts-include.jade

@@ -49,4 +49,4 @@ if current.path[0] == "docs"
     _st('install','VsuU7kH5Hnnj9tfyNvfK');
 
 <!-- Google Feedback -->
-script(src="//www.gstatic.com/feedback/api.js" type="text/javascript")
+script(src="//www.gstatic.com/feedback/api.js" type="text/javascript")