Send fee reminder from administrative email

If administrative email address is filled.

coin/members/models.py

@@ -271,18 +271,25 @@ class Member(CoinLdapSyncMixin, AbstractUser):
         from dateutil.relativedelta import relativedelta
         from coin.isp_database.models import ISPInfo
 
+        isp_info = ISPInfo.objects.first()
+        kwargs = {}
+        if isp_info.administrative_email:
+            kwargs['from_email'] = isp_info.administrative_email
+
         # Si le dernier courriel de relance a été envoyé il y a moins de trois
         # semaines, n'envoi pas un nouveau courriel
         if (not self.date_last_call_for_membership_fees_email
             or (self.date_last_call_for_membership_fees_email
-               <= timezone.now() + relativedelta(weeks=-3))):
-            utils.send_templated_email(to=self.email,
-               subject_template='members/emails/call_for_membership_fees_subject.txt',
-               body_template='members/emails/call_for_membership_fees.html',
-               context={'member': self, 'branding':ISPInfo.objects.first(),
-                        'membership_info_url': settings.MEMBER_MEMBERSHIP_INFO_URL,
-                        'today': datetime.date.today,
-                        'auto_sent': auto})
+                <= timezone.now() + relativedelta(weeks=-3))):
+            utils.send_templated_email(
+                to=self.email,
+                subject_template='members/emails/call_for_membership_fees_subject.txt',
+                body_template='members/emails/call_for_membership_fees.html',
+                context={'member': self, 'branding': isp_info,
+                         'membership_info_url': settings.MEMBER_MEMBERSHIP_INFO_URL,
+                         'today': datetime.date.today,
+                         'auto_sent': auto},
+                **kwargs)
             # Sauvegarde en base la date du dernier envoi de mail de relance
             self.date_last_call_for_membership_fees_email = timezone.now()
             self.save()