Made backup function compatible with web folder protection feature.

tbrehm

2012-10-02 624055af2898e06ef2ea3de3a138d0cd9abcddde

 install/sql/incremental/upd_0011.sql

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