Message's body can contains styles and other stuff
that can screw the look and feel of digests' mails.
Now we sanitize it if `sanitize_msg_body` is set on the digest (default on).
When creating digest records within the context of mail composer
(and possibly other contexts) you'll have a `default_template_id`
key in the context which is going to override our safe default.
This is going to break email generation because the template
will be completely wrong and unpredictable. Lesson learned :)
Depending on the request might fail
nevertheless the website should be there to be found.
Fallback to search and use it if possible for digest' site name
Simone Orsi