mousedown focus is too agressive

[Freddie Bingham]

1. Open the CKEditor demo.
2. Resize the editor so that it is several pages long, forcing one to scroll the browser several pages to get the bottom of the editor.
3. Empty the editor contents (Select All then Delete).
4. Scroll the editor so that the top of the editor is in view.
5. Click about an inch below the flashing cursor.
6. Observe that the editor scrolls to the bottom when it should not have scrolled at all.

[Freddie Bingham]

Duplicating this state in other browsers goes as follows:

FF,IE9: The top of the editor scrolls to the top of the browser. Webkit: No scroll

[Jakub Ś]

Issue can be reproduced in any CKEditor sample. Deleting content is not necessary.

Results:
Opera scroll to the bottom of the editor.
IE8, IE9 and Firefox "scroll to the cursor" - line with cursor blinking in it is the first in browser viewport.

All issues have been reproducible from CKEditor 3.3.

[Jakub Ś]

I did a quick test and it seems that patch from #7932 has fixed this issue.

[Jakub Ś]

#8688 was marked as duplicate.