Updated ISPConfig version number to 3.0.5.4p6

Till Brehm

2015-05-07 0d73295b42edb4d0dbd7d6727af6939d95cdb963

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