Fix copying messages to a folder with "empty" name e.g. "0", better error h...

Aleksander Machniak

2013-04-05 d2d8d498c67e7193dcdcebe7d806753ec02843fd

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-- Updates from version 0.7-beta
 
ALTER TABLE `session` CHANGE `sess_id` `sess_id` varchar(128) NOT NULL;