newline <br/> becomes &nbsp; when invoking getData()

[Satya Minnekanti]

To reproduce the defect:

1. Open nightly build & clear all editor content

2. Add few empty paragraph's.

3. Open inspector like Firebug, you see content like this in the editor body:

<p><br></p>
<p><br></p>
<p><br></p>
<p><br></p>

4. Click "Source" button which invokes getData(), it gives:

<p dir="ltr">&nbsp;</p>
<p dir="ltr">&nbsp;</p>
<p dir="ltr">&nbsp;</p>
<p dir="ltr">&nbsp;</p>

You can see the <br> converted to &nbsp;

please review and see whether this is a defect, or any reasons behind for the conversion. it seems to be intended. if it is, please explain the reason for doing this conversion.

[Jakub Ś]

In editable, empty blocks need fillers so that they could have a height. This role is fulfilled by <br> nodes. In data empty blocks are filled with   and this is one of basic concepts of HtmlDataProcessora
In short, we use <br> in ediatble and   in data. This is by design.