New users are redirected to their preferences page after sign up.  Closes gh-33.
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
Use HTML5 directive
Added missing space
Don't use the array of emails here.

Relates to gh-4
Added RSS 2.0 feed for all posts in all spokes.

Closes gh-14
Added RSS2.0 feed for all posts in a given spoke.

Closes gh-15
Merge pull request #56 from wilsonohyeah/master

Initial work on css layouts and kaminari