Add a test about updating  an array
Allow to unmarshall only one field in  results in Command response

refs #143
Fix eval command test
Use reflections lib instead of custom ClasspathFinder

Only concerns compatibility tests.
They can now be ran outside of jongo project.
A new jongo-extras project has been created to host compatibility tests
Remove json-mapper compatibility tests

Theses tests have been moved into a dedicated project jongo-extras
Rename Mongo local test property into jongo.test.mongo.local
Merge branch 'master' of https://github.com/bguerout/jongo