Various bugfixes

communication/apps.py

@@ -0,0 +1,4 @@
+from django.apps import AppConfig
+
+class CommunicationConfig(AppConfig):
+    name = 'communication'

communication/models.py

@@ -1,5 +1,6 @@
 from django.db import models
 from django.contrib.auth.models import User
+from django.utils.translation import ugettext_lazy as _
 
 
 class Notifying(models.Model):
@@ -14,8 +15,14 @@ class Notifying(models.Model):
 
 
 class Notification(models.Model):
-    sent_by = models.ForeignKey(Notifying)
-    about = models.ForeignKey(Notifying)
+    sent_by = models.ForeignKey(
+        Notifying,
+        related_name="notifs_sent"
+    )
+    about = models.ForeignKey(
+        Notifying,
+        related_name="notifs",
+    )
     to = models.ForeignKey(
         User,
         verbose_name=_("envoyée à")
@@ -32,7 +39,7 @@ class Commentable(Notifying):
 
 
 class Thread(models.Model):
-    topic = models.OneToOne(Commentable)
+    topic = models.OneToOneField(Commentable)
 
 
 class Comment(models.Model):