ALTER TABLE `rooms` ADD COLUMN `owner_password` varchar(160) DEFAULT NULL AFTER `join_password`;
ALTER TABLE `rooms` ADD COLUMN `ask_for_name` tinyint(1) DEFAULT NULL AFTER `locked`;
ALTER TABLE `participants` ADD COLUMN `peer_id` varchar(40) DEFAULT NULL AFTER `participant`;
ALTER TABLE `participants` ADD COLUMN `role` varchar(20) DEFAULT 'participant' AFTER `peer_id`;
CREATE TABLE IF NOT EXISTS `notifications` (
  `id` int(11) NOT NULL,
  `email` varchar(254),
  PRIMARY KEY (`id`,`email`)
);