feat #276 custom image for Iconbutton
fix #274 Refresh section attributes

Close #354.
feat #352 Orientation change detection functionality for mobile devices added to AT
feat #348 Animation/Transition Event callbacks
fix #348 animation event in non-browser

Make sure that Delegate can be loaded even in non-browser environments like Rhino or nodejs where window/document are not defined
feat 349 wip code
feat 349 wip tests