Merge branch '3882-explication-pour-suppression-presence' into 'dev_cooperatic'

3882 explication suppression presence

See merge request !58

lacagette_addons/lacagette_membership/models/shift_registration.py

@@ -23,6 +23,9 @@ class ShiftRegistration(models.Model):
         "Set to True when partners are both present. Used to detect if extra_shift_done is to be incremented when recording presences",
         default= False)
 
+    cancellation_description = fields.Char(
+        "So that the bdm can explain the reason for the registration cancellation and sign"
+    )
 
     @api.multi
     def write(self, vals):