move code for mail domain's owner change to plugin

Sergio Cambra

2014-07-04 6f4f7dbd37f50dc2bf0bdaf3d035806d4378bf0b

 install/sql/incremental/upd_0011.sql

New file
@@ -0,0 +1,2 @@
-- use text for groups
ALTER TABLE `sys_user` CHANGE `groups` `groups` TEXT;