Multi line Formatted blocks get put on one line after edit

[Benedict White]

Multi line formated blocks when edited using fckeditor get put on one line.

This makes it very difficult to quote code blocks and the like.

See here for an example: ​http://www.technicalterms.net/index.php?title=FCKeditor_bug

If you edit the page with the rich editor on, all the formatted blocks end up as one liners.

The site above runs on a snapshot of two days ago.

[Wiktor Walc]

I've made small change of handling <pre> tags with [952].

Let's mark this ticket as a dup of #1021 and continue discussion there.