PIM-3239: Create ChannelInterface
PIM-3239: Add channel mapping with interface
PIM-3239: Fix issue on MongoDB mapping
PIM-3240: Create LocaleInterface
PIM-3240: Add mapping with locale interface
PIM-3240: Fix locale interface
PIM-3240: Make it work on MongoDB
PIM-3550 Use the 1.2.1 version of doctrine annotations
Merge pull request #1914 from akeneo/PIM-3550

PIM-3550 Use the 1.2.1 version of doctrine annotations
PIM-3550 : update changelog
Preparing version 1.2.17
Merge pull request #1915 from akeneo/prepare-tag-127

Preparing version 1.2.17
Merge branch 'master' into merge-1217

Conflicts:
	CHANGELOG.md
	src/Pim/Bundle/CatalogBundle/Version.php
Merge pull request #1916 from akeneo/merge-1217

Merge 1.2.17 fixes on 1.3.x
Merge pull request #1909 from akeneo/PIM-3240

PIM-3240: Create LocaleInterface
Merge pull request #1908 from akeneo/PIM-3239

PIM-3239: Create ChannelInterface
PIM-2451 : first POC of product template storage
PIM-2451 : declare denormalizers, hot fix the product value and media
PIM-2451 : update the demo command
PIM-2451 : add a detacher to detach an object