Change res_partner with extra_shift_done

lacagette_addons/lacagette_membership/models/res_partner.py

@@ -40,6 +40,10 @@ class ResPartner(models.Model):
     cooperative_state = fields.Selection(
         selection=EXTRA_COOPERATIVE_STATE_SELECTION, default='not_concerned')
 
+    extra_shift_done = fields.Integer(
+        "Number of shift done with both of the associate",
+        default= 0)
+
     @api.model
     def run_process_target_status(self):
         """Method called by cron task"""