PIM-2554: Allow to add subscriber
Merge branch 'PIM-2554' of git://github.com/akeneo/pim-community-dev into PIM-2554
Revert "PIM-2554: Allow to add subscriber"

This reverts commit 601935c3fd070fa1b5859e1cee0a2a591c2919b1.
PIM-2554: Rename repository property by attribute one
PIM-2554: Add getUser method to user context
PIM-2554: Add method to build query
Merge branch 'master' into PIM-2554
Merge pull request #1083 from akeneo/PIM-2554

PIM-2554: Improve extensibility