-> 'Preview' is now a sub-tab of 'Elements' tab
-> The tree reflecting the structure of the module in the naviagtion block has been partially moved to admin block. I had some troble to identify 'actions' because each action is specific for an item and has not a general meaning. i.e.: 'Delete' has no sense at general level, 'Delete item 3' has a good sense. This is why I had problems to move at general level actions and I decided to move to admin block no longer 'actions' but 'templates' that are pages for survey administration.