Merge pull request #76 from ssethupathi/accept-lang-feature

Entity metadata now stores the vocabularies against fully qualified property names which makes it possible to have multiple properties with the same name
Corrected all the 'war' dependencies following change https://github.com/temenostech/IRIS/commit/a13375f3d480940c20a62f65af7b162122f4b7d6
Interaction SDK now produces non-flat metadata.xml in which the complex properties contain their child properties inside them.