PIM-3475: Fix attribute options sort order in import/export
PIM-3475: Fix export behat and polish
PIM-3475: Add phpspec to the new class
Merge pull request #1877 from akeneo/PIM-3475

PIM-3475: Fix attribute options sort order in import/export
PIM-3377: Check if there is available locales for attribute during import
PIM-3377: Added method that only export value for specific locale attribute