Problems with copy/paste HTML lists.

[Jakub Ś]

This issue was found when reproducing #8574

1. Clear editor contents and switch to source.
2. Paste the below code:

   <ol id="d65e23">
   	<li>
   		toto
   		<ol>
   			<li>
   				bibop</li>
   			<li>
   				tutut</li>
   		</ol>
   	</li>
   	<li>
   		tata
   		<ol>
   			<li>
   				lolilop</li>
   			<li>
   				reir</li>
   		</ol>
   	</li>
   	<li>
   		tutu</li>
   	<li>
   		lolo</li>
   </ol>
   

3. Switch to WYSIWYG, select whole list (E.g. CRTL+A) and copy with crtl+C
4. Paste the list using PasteFromWord dialog, paste dialog or CRTL+V

Results:
Webkit - List is wrapped in ol, li, div (div - typical for webkit pasting)
Opera - Similar to Webkit but there is no div - list is wrapped into ol, li
IE9 - List isalso nested but it looks a little bit broken (See image)

IE6-8 - Result is the same as in IE9 but extra JS error is thrown
Message: Invalid argument
Line: 796
URI: /3.6.2/ckeditor/_source/plugins/selection/plugin.js

Ticket reproducible from CKE 3.0

Firefox has its onw problem described in #8754