Added missing #update call to update digest setting for user.

Relates to gh-1
Added log message for kicking off digest sending.

Relates to gh-1
Call out the view template to use

Expected Rails magic to kick in here, but that wasn't the case.
Relates to gh-1
Added :first_name to .digest_list return attribs.

Relates to gh-1
#html_safe!

Relates to gh-1