uploadComplete = function (result) {
				if (result.error) {
					callback(result.error);
				} else {
					item.set(field.path, result);
					callback();
				}
			}
Returns a callback that handles a standard form submission for the field

Expected form parts are
- `field.paths.action` in `req.body` (`clear` or `delete`)
- `field.paths.upload` in `req.files` (uploads the image to cloudinary)

@api public