Fix Mike’s Drag and Drop demo

[pepelsbey]

trafficstars

I mean articles/_posts/2012-04-25-drag-and-drop.md

It's located at http://miketaylr.com/test/security.html and lacking http://people.opera.com/miket/2012/4/origin.html page.

As far as I understand, it requires two domains to work. It could be dev.opera.com + jsfiddle.com or some github.io static repository.

[mathiasbynens]

@miketaylr doesn’t have a backup of the missing page (I asked him privately), so we’ll have to recreate it.

On https://miketaylr.com/test/security.html as soon as you start dragging an error is logged to the console:

Uncaught TypeError: Object #<Clipboard> has no method 'allowTargetOrigin'

In Opera 12 this was not the case. So we’d also need to figure out what changed exactly.