host groups not sorted in dashboard widgets

in dashboard, entries are not sorted by host groups anymore in "system status", "host status" and "web monitoring"

broken by :

r28483 | tomtom | 2012-06-28 14:50:08 +0300 (Thu, 28 Jun 2012) | 1 line

..F....... ZBX-2506 fixed ordering for dashboard filter; fixed multisort function