PIM-2127 : move FlexibleQueryBuilder and related classes from FlexibleEntityBundle to CatalogBundle
PIM-2127 : move query exception
PIM-2127 : rename FlexibleQueryException to ProductQueryException
PIM-2127 : rename flexible query builder to product query builder
Merge branch 'master' into mongo/product_query_builder
PIM-2127 : update the changelog and upgrade doc
PIM-2127 : rename flexibleQB to productQB
PIM-2127 : fix the ORM base filter
PIM-2127 : add a ProductQueryUtility for MongoDB
PIM-2127 : add a base sorter for MongoDB
PIM-2127 : update the product query builder to apply basic sorter
onMongoDB implementation
PIM-2127 : move specs from flexible to catalog bundle
Merge branch 'master' into mongo/product_query_builder
Merge branch 'master' into mongo/product_query_builder
PIM-2127 : Fix CS
PIM-2127 : update the changelog
Merge pull request #868 from akeneo/mongo/product_query_builder

Re-work FlexibleQueryBuilder to add a base sorter (MongoDB)