Update dependencies

As far as i can see, the only breaking change is the change from
@detail_route to @action(detail=True) decorator in
rest_framework.decorators.
(famous last words)

requirements.txt

@@ -1,16 +1,16 @@
-certifi==2017.4.17
-chardet==3.0.3
-Django==1.11.15
+certifi==2019.11.28
+chardet==3.0.4
+Django==1.11.28
 git+https://github.com/djangonauts/django-hstore@61427e474cb2f4be8fdfce225d78a5330bc77eb0#egg=django-hstore
 git+https://github.com/d42/django-tree@687c01c02d91cada9ca1912e34e482da9e73e27a#egg=django-tree
-django-appconf==1.0.2
+django-appconf==1.0.3
 django-flat-responsive==2.0
-social-auth-app-django==2.1.0
+social-auth-app-django==3.1.0
 Django-Select2==6.3.1
-djangorestframework==3.5.4
-Pillow==3.3.1
-psycopg2==2.7.5
+djangorestframework==3.11.0
+Pillow==6.2.1
+psycopg2==2.8.4
 djangorestframework-hstore==1.3
-requests==2.16.5
-urllib3==1.21.1
-django_markdown2==0.3.0
+requests==2.22.0
+urllib3==1.25.8
+django_markdown2==0.3.1

storage/apiviews.py

@@ -1,6 +1,6 @@
 from rest_framework import viewsets, generics, filters
 from rest_framework.response import Response
-from rest_framework.decorators import detail_route
+from rest_framework.decorators import action
 from rest_framework.permissions import AllowAny
 
 from storage.models import Item, Label
@@ -30,7 +30,7 @@ class LabelViewSet(viewsets.ModelViewSet):
     queryset = Label.objects
     serializer_class = LabelSerializer
 
-    @detail_route(methods=['post'], permission_classes=[AllowAny])
+    @action(detail=True,methods=['post'], permission_classes=[AllowAny])
     def print(self, request, pk):
         obj = self.get_object()
         obj.print()
@@ -58,22 +58,22 @@ class ItemViewSet(viewsets.ModelViewSet):
 
         return obj
 
-    @detail_route()
+    @action(detail=True)
     def children(self, request, pk):
         item = self.get_object()
         return Response(self.serializer_class(item.get_children().all(), many=True).data)
 
-    @detail_route()
+    @action(detail=True)
     def ancestors(self, request, pk):
         item = self.get_object()
         return Response(self.serializer_class(item.get_ancestors().all(), many=True).data)
 
-    @detail_route()
+    @action(detail=True)
     def descendants(self, request, pk):
         item = self.get_object()
         return Response(self.serializer_class(item.get_descendants().all(), many=True).data)
 
-    @detail_route()
+    @action(detail=True)
     def siblings(self, request, pk):
         item = self.get_object()
         return Response(self.serializer_class(item.get_siblings().all(), many=True).data)