Merge branch 'stable-3.0.5' of git.ispconfig.org:ispconfig/ispconfig3 into stable-3.0.5

Author: Till Brehm

install/sql/ispconfig3.sql

@@ -897,8 +897,8 @@ CREATE TABLE `mail_user` (
   `login` varchar(255) NOT NULL default '',
   `password` varchar(255) NOT NULL default '',
   `name` varchar(255) NOT NULL default '',
-  `uid` int(11) unsigned NOT NULL default '5000',
-  `gid` int(11) unsigned NOT NULL default '5000',
+  `uid` int(11) NOT NULL default '5000',
+  `gid` int(11) NOT NULL default '5000',
   `maildir` varchar(255) NOT NULL default '',
   `quota` bigint(20) NOT NULL default '-1',
   `cc` varchar(255) NOT NULL default '',