Checkstyle tests too 69355194

Changed Checkstyle configs so test classes would be checked too.

Added @author tag to tests that were missing it (using script at https://github.com/ksclarke/bash-scripts/blob/master/git-author.sh)

Updated license-maven-plugin to the newest version.  My script uses a locally modified version of it.  I plan to create PR to the upstream project with those changes.

This PR shouldn't be merged until the new version of the Checkstyle rules are implemented (https://github.com/futures/fcrepo-build-tools/pull/4) and the code base is ready to be made compatible with those changes (https://www.pivotaltracker.com/story/show/71267176).  The tests will then be included with the work done for that pivotal ticket (which should just be an automated reformatting using Eclipse or some tool like it).