diff --git a/vim b/vim
deleted file mode 100644
index 930386b..0000000
--- a/vim
+++ /dev/null
@@ -1,56 +0,0 @@
-diff --git a/communication/models.py b/communication/models.py
-index 220d29d..8a89504 100644
---- a/communication/models.py
-+++ b/communication/models.py
-@@ -1,5 +1,4 @@
- from django.db import models
--from django.conf import settings
- from django.contrib.auth.models import Group
- from django.contrib.auth import get_user_model
- from django.contrib.contenttypes.fields import (
-@@ -16,31 +15,41 @@ class Subscription(models.Model):
-     object_id = models.PositiveIntegerField()
-     content_object = GenericForeignKey('content_type', 'object_id')
- 
-+    class Meta:
-+        abstract = True
-+
- 
- class UserSubscription(Subscription):
--    user = models.ForeignKey(settings.AUTH_USER_MODEL)
-+    user = models.ForeignKey(User)
-     is_unsub = models.BooleanField(
-         _("désinscription"),
-         default=False
-     )
- 
-+    class Meta:
-+        verbose_name = _("souscription utilisateur")
-+
- 
- class GroupSubscription(Subscription):
-     group = models.ForeignKey(Group)
- 
-+    class Meta:
-+        verbose_name = _("souscription en groupe")
-+
- 
- class SubscriptionMixin(models.Model):
-     subscribed_users = GenericRelation(UserSubscription)
-     subscribed_groups = GenericRelation(GroupSubscription)
- 
--    def get_unique_users(self):
-+    def get_manual_subscribers(self):
-         return self.subscribed_users.filter(is_unsub=False)
- 
--    def get_group_users(self):
-+    def get_subscribers_from_groups(self):
-         return User.objects.filter(group__in=self.subscribed_groups.all())
- 
-     def get_all_subscribers(self):
--        return (self.get_unique_users().union(self.get_group_users())
-+        return (self.get_manual_subscribers()
-+                    .union(self.get_subscribers_from_groups())
-                     .exclude(is_unsub=True))
- 
-     class Meta: