mongoid: production settings
journals: index: show published column
carousel: add spacing b/n img and caption text
carousel: make carousel resize gracefully

As an added bonus, the 'carousel-indicators' class's "top" field can be
any percentage, not an even multiple of the other "top" fields in the
other classes.
hard-code a special journal for the landing page blurb

The name of the journal must be "*pf-landing-page*".