Refactor FilesControllerBehavior#create_and_save_generic_file so that it can be reused
Refactor FilesControllerBehavior#create_and_save_generic_file so that it can be reused

samvera/hyrax,samvera/hyrax,samvera/hyrax,jeremyf/sufia,jeremyf/sufia,samvera/hyrax