Fix #133. Image photo: enleve canal alpha avant conversion en jpeg.

app/scodoc/sco_photos.py

@@ -303,6 +303,7 @@ def save_image(etudid, data):
     filename = get_new_filename(etudid)
     path = os.path.join(PHOTO_DIR, filename)
     log("saving %dx%d jpeg to %s" % (img.size[0], img.size[1], path))
+    img = img.convert("RGB")
     img.save(path + IMAGE_EXT, format="JPEG", quality=92)
     # resize:
     img = scale_height(img)