#312 - prevent dropping multiple files when multiple == false, also move extraDropzones option from FUB to FU, where it belongs
#312 - prevent dropping multiple files when multiple == false, also move extraDropzones option from FUB to FU, where it belongs

SimonWaldherr/uploader,SimonWaldherr/uploader,SimonWaldherr/uploader,SimonWaldherr/uploader,SimonWaldherr/uploader,FineUploader/fine-uploader,SimonWaldherr/uploader,FineUploader/fine-uploader,FineUploader/fine-uploader,SimonWaldherr/uploader