PICTURE_ERROR_SMALL = u'picture_error.png'
PICTURE_ERROR_MEDIUM = u'1297211435_error.png'
PICTURE_UNKNOWN_SMALL = u'1299549572_unknown2.png'
PICTURE_UNKNOWN_MEDIUM = u'1299549805_unknown.png'

DEFAULT_ZIP_FILENAME = u'document_bundle.zip'

DOCUMENT_IMAGE_TASK_TIMEOUT = 20