Wraps author image with a span.
Fixes notice for getting property of undefined.

The custom field for person_user_id is sometimes, somehow, set to -1, so this is
a quick fix to just check if we have a valid user ID. Eventually need to look
into how this fields gets set to -1 in the first place, and prevent it.
Removes unused template files.
Moves archives listings to sidebar template.
Markup housekeeping.
Some positive direction on layout.