Export figure fails with unicode in image name

[will-moore]

The export script uses a path based on the image's name to save the image to disk, either to use in a zip or to include into the PDF.
But the save fails if the name contains unicode characters.

See https://forum.image.sc/t/omero-figure-export-error/70861

            # create name to save image
            original_name = image.getName()
            img_name = os.path.basename(original_name)
            img_name = "%s_%s.tiff" % (idx, img_name)

        # Save Image to file, then bring into PDF
        pil_img.save(img_name)

Simply need to remove unicode characters - Not too important to preserve the name exactly as they are only used to recognise the images in a zip if user chooses to export "with images".

[imagesc-bot]

This issue has been mentioned on Image.sc Forum. There might be relevant details there:

https://forum.image.sc/t/omero-figure-export-error/70861/3