ICE-9259 fix to prevent the draggable from scrolling forever in one direction; fix to prevent the draggable to appear in the upper left corner when dropped outside the scrollable container; adjusted default scroll sensitivity; disabled revert visual effect when the draggable is in a scrollable container, due to multiple issues

git-svn-id: http://anonsvn.icesoft.org/repo/icefaces3/trunk/icefaces@35544 1de00972-ac04-4911-a46b-06793c8d78d9
ICE-9244 fix to avoid hiding the drop-down list when clicking on its scrollbar on IE

git-svn-id: http://anonsvn.icesoft.org/repo/icefaces3/trunk/icefaces@35545 1de00972-ac04-4911-a46b-06793c8d78d9