Add eager loading and scopes, change production config
Optimize code; reduce page load from ~7s to ~2.5s. Add scopes to eager load associations, and refactor Indicator/Snapshot methods to use drastically fewer queries.
Make database columns for rank_delta and value_delta. Reduce page load to a brisk 2s.
Fix scrollspy now that it's not a simple hidden-print affix. Set min-width for the media query to hide the scrollspy.
Merge branch 'stage'