PIM-3377: Check the locale specific during imports and exports
Merge pull request #1844 from akeneo/PIM-3377

PIM-3377: Check if locale specific exists in attribute dunring import
PIM-3448: add a method to retrieve attribute groups from a list of attribute codes
Merge pull request #1897 from akeneo/PIM-3448

PIM-3448: add a method to retrieve attribute groups from a list of attri...
PIM-3377: Fix cs for static analysis
Merge pull request #1901 from akeneo/PIM-3377

PIM-3377: Fix cs for static analysis
PIM-3458 Automatically set next sort order when creating an attribute group