Fix cleaning and saving of parent.

ticdesk_account/models.py

@@ -106,6 +106,12 @@ class TeckidsParent(ldapdb.models.Model, TeckidsLdapMixin):
         if not self.cn:
             self.cn = "%s %s" % (self.given_name, self.sn)
 
+        super(TeckidsParent, self).clean()
+
+    def save(self, *args, **kwargs):
+        self.clean()
+        super(TeckidsParent, self).save(*args, **kwargs)
+
 class TeckidsGroup(ldapdb.models.Model, TeckidsLdapMixin):
     class Meta:
         managed = False