Update statistics app to use registry

apps/statistics/registry.py

@@ -0,0 +1,10 @@
+from __future__ import absolute_import
+
+from django.utils.translation import ugettext_lazy as _
+
+from .icons import icon_statistics
+
+label = _(u'Statistics')
+description = _(u'Central place to store and display app statistics.')
+dependencies = ['app_registry', 'icons', 'navigation']
+icon = icon_statistics