fixed 21196: select all no longer selects the special break we use in empty documents (this would cause an invisible selection). fixed 21430: choosing a new alignment in an empty doc used to do nothing. Now it works but I've exposed a selection bug inthe process... fixed 22225: a little unintended re-entrancy caused multiple breaks to be inserted in empty table cells when doc read in. git-svn-id: svn://10.0.0.236/trunk@57668 18797224-902f-48f8-a5cc-f745e15eee43