Added a BlueimpController skeleton.
Makes BlueimpController selectable through configuration.
Fixed configuring of frontend and classname of BlueimpController
Added a ResponseInterface because every frontend has to use its own.
Readded FineUploaderResponse
Fixed tests
Introducing AbstractResponse which integrates the ArrayAccess interface.
Integrated BlueimpResponse.
Renamed class file.
Remove wrong comment.
Used BlueimpResponse in corresponding Controller.
Implemented chunked uploads for Blueimp frontend.
Removed unused die()