* Removed many2one field section_id from stage
* Added many2many field stage_ids in sales team(section)
* Improvement in stage_previous, state_next
bzr revid: rpa@tinyerp.com-20101001123719-h7rmqkgt15abjbfb
* Added shortcut at right panel to jump to related Meetings
* Made summary and date as required
* Reorder buttons
* Improved phonecall to opportunity for partner_address_id and email_from fields in opportunity
bzr revid: rpa@tinyerp.com-20100624124953-93whokx8a8ibw0l8