adding category and author filters
assets
fixes in controllers
fixes in routes, filter actions, views
adding filter feature specs, assets
adding travis ci, scopes
changing database user
fixing travis.yml
another changes to travis.yml
changes for travis
configuring database-cleaner
travis fixes
fixes in specs that fails migrations
fixes in specs that fails migrations
database.yml fix
travis.yml fix
travis.yml fix
merging with categories_navigation