Changed version number to 3.1b1 for first beta release.

Till Brehm

2016-04-22 037b69e2230b731cc8c2a4846cd8f7f233042338

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