Fix style and phpdoc
Clean up specs
Quote '@' characters in yaml
Merge pull request #1437 from akeneo/cleanup

Style and phpdoc fixes
Update CHANGELOG.md
Add notification entities, repository and specs
PIM-3132: Create button for sequential edition
added sequential edition backend storage entity
added sequential edition backend storage entity
CS fixe
PIM-3148: Create a mass action route for sequential edit
CS fixes
blank space removed
Merge pull request #1440 from akeneo/3136

PIM-3136: added sequential edition backend storage entity
Merge pull request #1441 from akeneo/PIM-3132

PIM-3132: Add button for sequential product edition
PIM-3146: Add acl resource on sequential edit button
PIM-3146: Add AclAncestor on mass action
PIM-3136: Update SequentialEdit.orm.yml
Merge pull request #1443 from akeneo/PIM-3136

PIM-3136: Update SequentialEdit.orm.yml
Merge pull request #1444 from akeneo/PIM-3146

PIM-3146: Manage ACL