[BUG #6609] Fixes in the playground.
Minor
Minor
Minor.
[BUG #6609] Fixed focus handling for combo box.
[BUG #6609] Removed compat module.
[BUG #6609] Moved scroll and focus handling to the qx.desktop layer.
Minor
[BUG #6609] Fixed activation support and removed html.blocker
[BUG #7710] Enhance template mechanism and use it for the rating widget and calendar.
[BUG #7710] Fixed creation of widget collections for children and ancestors.
[BUG #6609] Minor fix for the blocker.
Minor