I choose Napili template in Spring 16 enabled org and try editing it to insert a HTML widget and it says "This page is based on lightning template and cannot be edited via site.com ".
The winter 16 allowed this ,so please let me know how can one edit standard templates via site.com .I have attached screenshot of the issue .
If one uses site.com how do i import all the templates and functionalities of the existing templates ? Please share your thoughts on this .