Image cropping forced on non-cropped legacy images

I found a commit (it was requested by the community but I couldn't find the issue) that forces cropping of an image even if it existed before the module was installed. This with a high certainty will break existing images if they were manually cropped and prepared in case when a default cropping setting is set (e.g. crop all images with by a square area 100x100).

I made a patch that checks if the file is newly uploaded or not and doesn't force scaling in latter case.