ADD: dav_events: purging participants.

dav_events/views/base.py

@@ -1,5 +1,11 @@
 from django.views import generic
 
+from ..utils import purge_participants
+
 
 class HomeView(generic.TemplateView):
     template_name = 'dav_events/home.html'
+
+    def get(self, request, *args, **kwargs):
+        purge_participants()
+        return super(HomeView, self).get(request, *args, **kwargs)