PIM-2266: Create new hydrator to get Entity ids
PIM-2266: Redefine delete mass action for products
PIM-2266: Implements ProductRepository::deleteProducts() method
PIM-2266: Call deleteProducts with productIds
PIM-2266: Add database cascade constraint between value and product
PIM-2266: Implementation if there is no products to remove
Intermediary form type specialisation
Introducting object identifier form type
Revert "Introducting object identifier form type"

This reverts commit 10458cd0d3fada0035c072d8abe080cc4d41400c.
WIP on AssociationFormType
PIM-2266: Add php documentation
PIM-2266: Translate delete message
PIM-2266: Translate product repository exception message
PIM-2266: Update Product mass delete handler
PIM-2266: Rename method to delete products from id
PIM-2266: Clean product mass delete handler
PIM-2266: Add php doc
PIM-2266: Clean hydrator
PIM-2266: Add quotes for services injection
PIM-2266: Update CHANGELOG