Completeness normalization on product MongoDB
Merge pull request #870 from akeneo/mongodb/completeness_normalization

Completeness normalization on product MongoDB
Fixes changes in phpSpec Skip extension
Restored the phpspec junit generation
Fixes check on value exist. Uses the queryBuilder now
Merge pull request #872 from akeneo/fixes/mongo_unique_value

Fixes check on value exist. Uses the queryBuilder now
Merge branch 'master' into mongo/product_query_builder