Merge pull request #982 from akeneo/fix/attribute_option

Added constraint on attributeOption
Replace Process with simple exec

Conflicts:
	src/Pim/Bundle/ImportExportBundle/Controller/JobProfileController.php
PIM-2484: Implements filtering by empty value for text
PIM-2483: Implements filtering for number
PIM-2488: Remove useless null fields
PIM-2441: Allow to filter on empty values for MongoDB
PIM-2441: Update oro platform used
PIM-2441: Update CHANGELOG
PIM-2441: Update UPGRADE-1.2.md file
MongoDB implementation has changed removing null values in NormalizedData field
PIM-2441: Inverse condition test
M-2441: Inverse condition test
Merge pull request #1036 from akeneo/PIM-2441

PIM-2441: Filter by empty values (Text and Number)
PIM-2475 Enforce ACL on product mass actions
PIM-2480 Allow importing products with duplicate values for unique attributes if the value is an empty string
Fix PHPCS
PIM-2441: Fix issue on ORM implementation
Merge pull request #1037 from akeneo/PIM-2441

PIM-2441: Fix issue on ORM implementation
Introduce a dedicated twig template to display the version
Add a Version class and rely on it to retrieve the current PIM version
PIM-2441: Filter by date and textarea