Fixed PIM-3100
Merge branch 'master' into fix/PIM-3100
Fixed CS
Updated changelog
Fixed PIM-3100
Updated changelog
Fixed PHPDoc
Merge branch 'master' into fix/PIM-3100

Conflicts:
	CHANGELOG.md
Merge pull request #1388 from akeneo/fix/PIM-3100

Heterogeneous invalid item archiver