PIM-2355 Fixed uniqueness validation constraint with mongodb
Merge branch 'master' into mongo/pim-2355

Conflicts:
	src/Pim/Bundle/CatalogBundle/Doctrine/MongoDBODM/ProductRepository.php
Fixed typo in the product repo
Moved product filtering scenarios
PIM-2355 Fixed DateFilter specs
Merge pull request #966 from akeneo/mongo/pim-2355

PIM-2354 Fixed uniqueness validation constraint with mongodb