Enables Rack compression
Caches impact, adds star rating backend
Changes sort order to impact for all listings
Adds star rating to ideas
Adds button to temporarily disable card colouring
Fixes migration to keep PG happy
Merge branch 'milestone/2/the-courrier' into feature/star-idea-ratings
Fixes #46.
Merge pull request #83 from mezis/feature/star-idea-ratings

Feature: Star idea ratings