Remove unused jersey 2.x dependency
Update Jena to 2.12

Jena 2.12 includes native support for json-ld, so we can drop
jsonld-java-jena per
https://github.com/jsonld-java/jsonld-java/commit/c8aa923d791ede7d27e4336dd19ef421320bfa50
Update htmlunit
Update dependencies
Merge pull request #449 from fcrepo4/update-dependencies

Update dependencies

Addresses: https://www.pivotaltracker.com/story/show/77988740