Merge pull request #1723 from akeneo/PIM-3312-stable

PIM-3312: check attributes locales, channels and currencies in CSV header
Preparing version 1.2.11
Merge pull request #1725 from akeneo/version/1-2-11

Preparing version 1.2.11
PIM-3312: fix the installation of the PIM with the datasets (CsvProductReader was instanciated with all locales disabled)
Merge branch 'PIM-3312-stable' into PIM-3312

Conflicts:
	CHANGELOG.md
	src/Pim/Bundle/BaseConnectorBundle/Reader/File/CsvProductReader.php
	src/Pim/Bundle/CatalogBundle/Version.php