Merge branch 'develop' into 'master'

Fix: Update AnswerNotificationSerializer to solve notifications bug

See merge request !1

courses_notifications/serializers.py

@@ -16,6 +16,7 @@ class AnswerNotificationSerializer(serializers.ModelSerializer):
     class Meta:
         model = AnswerNotification
         depth = 1
+        fields = '__all__'
 
     def get_activity_url(self, obj):
         course_slug = obj.activity.unit.lesson.course.slug