Merge branch '3.8'

Conflicts:
	composer.lock
Fix master unit tests
Add uninstaller for development purposes
Fix latest merges
Drop ftp_export tables calls
Remove calls to dropped orders table
Add user manager & user manipulator
Add UsrId property
Add Entity Interface
Addressed romainneutron comments
Regenerate SQLite Database
Fix tests
Remove user adapter interface
Rename ModelServiceProvider to ManipulatorServiceProvider
Adress comments