Re-include flag for enabling jacoco unit test coverage reporting on fcrepo-kernel-impl

Follow-on resolution for: https://www.pivotaltracker.com/story/show/77197212
Upgrade modeshape version to 4.0.0.Beta1

Resolves: https://www.pivotaltracker.com/story/show/77806922
Update jacoco dependency to support java 8
fix javadoc tags to be syntactically valid
Update to powermock 1.5.5 for java 8 compatibility
Merge pull request #446 from fcrepo4/jdk8

Update jacoco dependency to support java 8
[maven-release-plugin] prepare release fcrepo-4.0.0-beta-03
[maven-release-plugin] prepare for next development iteration
Excludes log4j-over-slf4j from fcrepo-transform

Resolves: https://www.pivotaltracker.com/story/show/77941556
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
Fix javadocs to pass strict parsing in jdk8
Merge pull request #449 from fcrepo4/update-dependencies

Update dependencies

Addresses: https://www.pivotaltracker.com/story/show/77988740
Merge pull request #450 from fcrepo4/jdk8

Fix javadocs to pass strict parsing in jdk8

Addresses: https://www.pivotaltracker.com/story/show/77988778
Advertise the Non-RDF Content as a LDP#NonRDFSource.

http://www.w3.org/TR/ldp/#h5_ldpnr-type
> 4.4.1.2 LDP servers exposing an LDP Non-RDF Source may advertise this by
> exposing a HTTP Link header with a target URI of
> http://www.w3.org/ns/ldp#NonRDFSource, and a link relation type of type
> (that is, rel='type') in responses to requests made to the LDP-NR's HTTP
> Request-URI [RFC5988].

Fixes https://www.pivotaltracker.com/story/show/78046460
Fix dateTime values in filter

- Fix String value creation for JQL transformations
- Add test for JQLConverter

Resolves: https://www.pivotaltracker.com/story/show/77788512
RdfAdder and RdfRemover should sanity-check against adding existing mixins or trying to remove the primary type of a node
Update to use new preference PreferMinimalContainer instead of deprecated PreferEmptyContainer