[FIX] account_followup data forcecreate false

Backport of 7.0 fix from cef081d09aea928f7abaa9acf400ffa74cd06f32

bzr revid: al@openerp.com-20121218182753-1m4mboe5g51dv1y3
Merge pull request #15 from odoo/6.1

[FIX] account_followup data forcecreate false