[IE] Image attribute not readed correctly

[Marek Lewandowski]

Checked only on IE10, but this issue might be also present in other IE versions

1. open any sample with CKEditor and image plugin (i.e. samples/replacebyclass.html)
2. use following source

   <p>Text with <a href="http://ckeditor.com">link</a> and image <img alt="" src="assets/sample.jpg" style="height:60px; width:48px" />.</p>
   

3. go back to wysiwyg mode
4. drag image into middle of the link
5. double click image to check its properties

Expected result:
Properties like image source link, height and width should be predefined in text inputs.

Current result:
Properties are missing.

additional info:

1. Couldn't reproduce in Chrome @ Win7.
2. Desired informations are available in dialog after Right Click / Image Properties.
3. Seems to work OK in 4.4.0
4. Seems to be broken in 4.4.1