PIM-3206: allow override of the installer database command
Merge pull request #1660 from akeneo/PIM-3206-stable

PIM-3206: allow override of the installer database command
PIM-3254 : update translation normalizer to avoid extra disabled locales
PIM-3254 : add cases in specs and re-work legacy unit tests
PIM-3254 : deal with versioning cases, all locales provided when no list
in context
Merge pull request #1661 from akeneo/PIM-3254

PIM-3254 : update normalizers to remove disabled locales in exports
PIM-3217 Fix grid filter selector with duplicate group order
Merge pull request #1665 from akeneo/PIM-3217

PIM-3217 Fix grid filter selector with duplicate group order
PIM-3281 : fix mass edit on localizable values
Merge pull request #1668 from akeneo/PIM-3281

PIM-3281 : fix mass edit on localizable values
PIM-3248 Fix completeness calculation when removing required attributes from families
PIM-3248 Skip behat scenario due to an issue on mongo
Merge pull request #1662 from akeneo/PIM-3248

PIM-3248 Fix completeness calculation when removing required attributes from families
Add issue ids in changelog
PIM-3279: Add an ajax filter
PIM-3266: add Behat scenarios to detect the problem
PIM-3266: do not flush skipped items during an import
PIM-3221: Fix bug on variant group import

*Fix bug on variant group import, possibility to update variant
groups's attributes on import and it shouldn't be possible (currently it display a
error message)

*Improved the behats