Merge branch 'master' of git.ispconfig.org:ispconfig/ispconfig3

Till Brehm

2015-12-21 b25f400cd6bc255b01e05ac274f050ba4039a411

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