Added basic statistics

src/pretix/plugins/statistics/urls.py

@@ -0,0 +1,8 @@
+from django.conf.urls import url
+
+from . import views
+
+urlpatterns = [
+    url(r'^control/event/(?P<organizer>[^/]+)/(?P<event>[^/]+)/statistics/', views.IndexView.as_view(),
+        name='index'),
+]