Revise the language filtering from RDF. Create unit tests.
Merge branch 'develop' of git+ssh://github.com/vivo-project/Vitro into develop

Conflicts:
	webapp/src/edu/cornell/mannlib/vitro/webapp/rdfservice/filter/LanguageFilteringRDFService.java
	webapp/test/edu/cornell/mannlib/vitro/webapp/rdfservice/filter/LanguageFilteringRDFServiceTest.java