09/02/2014: + Them cot reg_ip (varchar,null)
			+ them coi user_guid (GUID 32 ky tu)
			+ active_status: 0 = moi dang ky, 1= da kich hoat
			+ enable_login: 0 = ko cho login, 1: login binh thuong
			+ run sql: update media_user set `active_status`=1,`enable_login`=1
			
			da chay tren host
			ALTER TABLE `media_user` ADD `reg_ip` VARCHAR( 20 ) NULL AFTER `user_lastvisit` ,
						ADD `user_guid` VARCHAR( 40 ) NULL AFTER `reg_ip` ,
						ADD `active_status` INT( 10 ) NULL AFTER `user_guid` ,
						ADD `enable_login` INT( 10 ) NULL AFTER `active_status` ;
			+ tao bang ip_ban bang script tao table
			CREATE TABLE media_ip_ban
			(
				id int NOT NULL AUTO_INCREMENT,
				ip varchar(50) NOT NULL,
				date_ban datetime,
				ban_interval int,
				description varchar(500),
				user_ban varchar(50),
				PRIMARY KEY (id)
			)