Merge pull request #41 from charman/master

Bumped (Python) Concrete version # to 2.0.7pre
Update supercomm with some convenience methods.
Add mockito as a possible dependency.
Begin validation library port.
Initial interface commit.
Update slf4j api version
Add json log4j2 logging.
Refactor Serialization library a bit to take in generic objects for de/serialization.
Beginning of validation library.
Add some more utility methods to SuperComm.
Fix method permissions on various methods. Add sentence impl.
In progress
refactor test code into test-jar
Fixed borked tests; use log4j2 instead of logback; refactor useful test code into test jar.
Lots of refactoring
More refactoring.
Add ValidatableSituationMention first cut
Add section tests
Add ontology subproject
Delete some stuff (test jenkins)