Changed max. length for session hash keys from 32 chars to 64 chars in the mysql database.

install/sql/incremental/upd_0023.sql

+ALTER TABLE  `sys_session` CHANGE  `session_id`  `session_id` VARCHAR( 64 ) CHARACTER SET latin1 COLLATE latin1_swedish_ci NOT NULL;
\ No newline at end of file

install/sql/ispconfig3.sql

@@ -1375,7 +1375,7 @@ CREATE TABLE `sys_remoteaction` (
 --
 
 CREATE TABLE `sys_session` (
-  `session_id` varchar(32) NOT NULL DEFAULT '',
+  `session_id` varchar(64) NOT NULL DEFAULT '',
   `date_created` datetime NOT NULL DEFAULT '0000-00-00 00:00:00',
   `last_updated` datetime NOT NULL DEFAULT '0000-00-00 00:00:00',
   `session_data` longtext,