S3 Support

This allows you to upload files to a S3 server and simply return a URL to the image. This has the following configuration options: - Access Key ID - The AWS Access Key ID for the AWS credentials you want to use. - Secret Access Key - The AWS Secret Access Key for the AWS credentials you want to use. - Endpoint - This is the AWS endpoint you want to use. - Bucket Name - This is the name of the bucket. - Bucket URL - This is the URL which points to the bucket.