SitePen/dgrid — pull request #668 by edhager (2013-07-22 23:02:31+00:00)
Title: Fix #361: OnDemandList: empty preload node caused preload processing to stop

In cases where the first/top preload node was visible but empty, the second/bottom one was not being processed. The top one had to be scrolled beyond the buffer limit before the second one was processed.