Many changes to WithinDocCoref2

 - CorefGazetteers is no longer used and deprecated
 - Training & testing files are passed as command-line arguments
 - It uses the default factorie wordnet (which can be overriden with a system property)
fix compile error
WithinDocCoref2: changing serialization: only using a single stream instead of two; also adding the option of loading a model from the classpath
nlp: adding WithinDocCoref2 to the NLP command-line tool
WithinDocCoref2: fixing small empty list errors in entity type prediciton and mention alignment
WithinDocCoref2: fixing deserialization
WithinDocCoref2: fixing weird evaluation bug
nlp: EntityTypeAnnotator1 has the right dependencies, can run WithinDocCoref2 as part of the NLP pipeline now
Merge pull request #6 from alextp/coref-changing

Many changes to WithinDocCoref2