Add the Plates service provider
Merge branch 'master' of github.com:AIWebSystems/Streams
Merge branch 'master' of github.com:AIWebSystems/Streams
Merge branch 'master' of github.com:AIWebSystems/Streams
Remove Plates for now
Add class suffix
Improve add-on manager
Merge branch 'master' of github.com:AIWebSystems/Streams