Fix wrong namespaces
Always add a blank line before the namespace declaration for homogenousity
Update CHANGELOG.md

Typo
Merge pull request #652 from akeneo/fix-namespaces

Fix namespaces
Build directive updated for behat coverage
Better message in case of unknow flexible attribute
Fix Fatal error on AjaxEntityType UT
Merge branch '1.0' of github.com:akeneo/pim-community-dev into 1.0
Merge branch 'master' of github.com:akeneo/pim-community-dev
Merge branch 'master' into PIM-1837