Use HTML5 notifications instead of in-page if supported

[bergie]

If supported by the browser, we should consider using HTML5 notifications instead of the Create.js notification widget, at least for notifications not attached to a DOM element.

http://blog.pragmatic.ly/its-not-perfect-but-its-time-to-integrate-web

[SvenDowideit]

mmm, playing with it on my normal desktop, I never noticed the notifications - they were on the other monitor, as far away from the browser window i was reading.

so while it sounds good to integrate with the desktop, its UI visibility leaves quite a bit to be desired.

meanwhile, the jGrowl notifications I integrated look nice, but I think are leaking memory right now.

[woodworker]

The only problem i see is that the actual implementation in createjs supports html notifications, but the w3c spec does not.

if we ignore that html fact it should not be the problem

[woodworker]

to make this happen we should separate notifications(the windows without buttons) from dialogs(the windows with buttons)