Can't outdent nested list items

[fredck]

It seams that both IE and Firefox have problems when dealing with properly nested lists.

Steps to reproduce

1. Load the following code in the source view:

<ul>
    <li>Level 1
    <ul>
        <li>Level 2
        <ul>
            <li>Level 3</li>
        </ul>
        </li>
    </ul>
    </li>
</ul>

2. Back to WYSIWYG, try to outdent "Level 2".

Expected behavior

The following code should be the result of the above action:

<ul>
    <li>Level 1</li>
    <li>Level 2
    <ul>
        <li>Level 3</li>
    </ul>
    </li>
</ul>

Current behavior

Firefox : no action at all. It simply does nothing.

IE : if you click at the end of the line (far to the right) before outdenting, then "Level 3" is changed instead. If you instead click on the middle of "Level 2", it is outdented correctly, but "Level 3" goes separated from the list.

[fredck]

Fixed for the 2.5.