[sharing] Add bulk scrobble share management

vrobbler/apps/scrobbles/views.py

@@ -371,6 +371,9 @@ class ScrobbleListView(LoginRequiredMixin, ListView):
                 qs = qs.filter(id__in=matching_ids).distinct()
         else:
             tag_list = []
+        visibility_param = self.request.GET.get("visibility", "")
+        if visibility_param in ("public", "shared", "private"):
+            qs = qs.filter(visibility=visibility_param)
         self.tag_list = tag_list
         self._full_queryset = qs
         return qs