Disable mysql error messages in demo mode. Fixed a sql error in vm list.

tbrehm

2013-02-28 f25b4b0309989d844d5b306effc8bb7e28ea7461

1
ALTER TABLE  `sys_session` CHANGE  `session_id`  `session_id` VARCHAR( 64 ) CHARACTER SET latin1 COLLATE latin1_swedish_ci NOT NULL;