Refactor code to use interfaces (For category essentially)
PIM-1888: Update products reader for fixtures loading
Merge pull request #756 from akeneo/PIM-1888

PIM-1888: Update products reader for fixtures loading
Remove useless blank lines
Remove useless use statement
Merge branch 'master' into refactoring_interfaces
Fixed licence syntax
PIM-2093: Add CategoryInterface in php documentation
Update php documentation replacing number by integer
Rename phpunit.dist.xml to phpunit.xml.dist
Merge branch 'master' into refactoring_interfaces
Merge pull request #695 from akeneo/refactoring_interfaces

Refactor code to use interfaces (For category essentially)
Fix phpcs
Merge branch 'master' into fix/PIM-2015