Merge branch '3.8'

Conflicts:
	bin/developer
	build-env.sh
	composer.json
	composer.lock
Import process manager
Require PHP ZMQ extension
Add JobInterface and EditorInterface
Add FTP and default editors
Add Null job
Add JobData
Add Task and TaskList
Cleanup Job on failure
Add JobData
Add Ftp job
Add WriteMetadata job
Add Subdefs job
Add support for integers values
Add FtpPull job
Update to latest task manager
Add EmptyCollection job
Add Phraseanet Indexer job
Add Archive task
Add Bridge job