Get datastream length from the response headers
Fetch original file name from headers
Remove Datastream.has_content?
Adjust expectations broken after refactoring
For testing, use a URI on our server. Fix rspec deprecations.
Don't use container_resource inside Datastream#stream
Revert changes that removed the resources link to a datastream
Don't clean fedora both before and after tests. Before is sufficient
Remove cruft from Datastream#metadata_resource