Because of the disappearance of the repo-aduno Maven repository, adds
explicit version 2.7.0 entries to dependencyManagement to manage the
transitive sesame-* dependencies from any23.

Adds fcrepo-thirdparty repository which contain the various aduna-* dependencies which are not
available in Maven Central for any version.
clean up style errors after removal of bookkeeping synchronous code
minor: cleans up unused imports
added integration test infrastrucutre and switched fcrepo-legacy-api to a jersey impl
switched http-api to jersey and changed http-api integration tests to use grizzly
switched RSSPublisher to Jersey impl and changed integration test to use grizzly
changed webapp, generators-rdf and webhooks to jersey impl and switched integration tests to use grizzly
added spring-web as a test-scoped dep
removed test-scope and moved dependencies
Cleaned out CXF stuff and moved version control to fcrepo/pom.xml
fixed some versions in dependency management, bumped guava version to 14
changed spring-aop version on the parent level and hoping for the best
Added CXF excluder rule
rebased master, and had to fix some imports