Add atom logic to show method of controller
Remove atom route from routes.rb
Register `:feed` MIME type
Add `rel=alternate` to header
Use `request.host` instead of `request.env["HTTP_HOST"]`
Pass protocol to `dataset_to_feed`
Change title of /datasets to 'Search Results' if search param is present
Add feed to `/datasets`
Use builder views for Atom feeds
Add `attained_level_title` to Dataset show method
Fix bug where search only searches the first page of results
Add a case for when the licence is nil in `data_licence_determined_from_responses` and `content_licence_determined_from_responses`
Add attained level and name to certificate factories
Add test for JSON
Add tests for atom feeds
Merge pull request #567 from theodi/feature-561-atom-feed-on-search-results

Atom feed on search results