Fix 7871: Move "Add Note" pane below previous notes.
The "Add note" pane location now depends on the bugnote
ordering, so that it will be always near the last inserted note.

git-svn-id: http://mantisbt.svn.sourceforge.net/svnroot/mantisbt/trunk@4392 <a class="text" href="/?p=mantisbt.git;a=object;h=f5dc347c">f5dc347c</a>-c33d-0410-90a0-b07cc1902cb9