[Opera] Scroll after inserting element

[Piotrek Koszuliński]

Scrolling after editable#insertElement has to be switched off (​https://github.com/ckeditor/ckeditor-dev/commit/57049a1) because selection's type wasn't NONE, but selection was empty and in a result one of tests in iframe/iframe.html has been failing.

[Jakub Ś]

To reproduce:

1. Inset below into E.g. replacebycode.html sample

   var editor = CKEDITOR.replace( 'editor1' );
   editor.on( 'instanceReady', function( e )
   {
   	setTimeout(function(){
   		var element = CKEDITOR.dom.element.createFromHtml( '<iframe src="http://www.w3schools.com" width="100px" height="100px" />' );
   		editor.insertElement( element );
   	},2500);
   });
   

2. Make browser window very small
3. Refresh page with CRTL+F5 and scroll the page down

Result: When iframe will be inserted browser (Opera only) will not be scrolled to caret position.

[Piotrek Koszuliński]

Opera<=12 is not supported any more.