This branch adds contextual buttons for the various items contained
in the history tab that are removed.
res.partner:
- in crm: re-ordered of the various Leads/Meetings/Opportunities buttons
- in crm_claim: added a Claims button, removed claims in history tab
- in event: removed one2many field towards event.event and event.registration, as well as other data related to history tab
- in marketing_campaigns: removed on2many field toward workitems (workitem_ids)
- in project: removed task from history; added Tasks button
- in project_issue: removed issues from history; added Issues button
bzr revid: tde@openerp.com-20130614121020-zl1l18iz9gv1smaa
24a411d9eb