bzr revid: odo@openerp.com-20140218171508-6li402027u57ltrx
Remove 2 unsused field from calendar.event model (dir,sequence) bzr revid: jke@openerp.com-20140115093805-1g1j1oymyxsb6kgh
bzr revid: jke@openerp.com-20131219162559-4ytfyi0qld5sr58n