Create event note serializer and view, create middelware for get current profile and update news

src/stats/urls.py

 from rest_framework import routers
-
 from . import views
 
 router = routers.DefaultRouter()
-router.register(r'events', views.EventViewSet)
+router.register(r'events', views.EventViewSet, base_name='events')
+router.register(r'notes', views.NoteViewSet, base_name='notes')
 
 urlpatterns = router.urls

src/stats/views.py

@@ -2,8 +2,16 @@ from rest_framework import viewsets
 
 from . import models
 from . import serializers
+from common.permissions import IsStaffUser, IsStaffOrReadOnlyForAuthenticated
 
 
 class EventViewSet(viewsets.ModelViewSet):
     serializer_class = serializers.EventSerializer
     queryset = models.Event.objects.all()
+    permission_classes = (IsStaffOrReadOnlyForAuthenticated, )
+
+
+class NoteViewSet(viewsets.ModelViewSet):
+    serializer_class = serializers.NoteSerializer
+    queryset = models.Note.objects.all()
+    permission_classes = (IsStaffUser, )