Update listing display to resize correctly
Add responsive listing styles
Add responsive header styles
Add responsive post styles
Merge branch 'feature-review-design' into feature-responsive-design

* feature-review-design:
  Add flexbox for post columns
  Fix display date
  Transfer @alexlande's styles to other review pages
  Remove extraneous view
  Add category error messaging, hide empty ones

Conflicts:
	app/assets/stylesheets/framework/_posts.scss
	app/views/categories/show.html.erb
	app/views/listings/index.html.erb
	app/views/shared/_listing_group.html.erb
Merge pull request #27 from FormidableLabs/feature-responsive-design

Feature: responsive design