Fix subscription and improve views

sith/settings.py

@@ -97,6 +97,8 @@ TEMPLATES = [
                 "can_edit_prop": "core.views.can_edit_prop",
                 "can_edit": "core.views.can_edit",
                 "can_view": "core.views.can_view",
+                "get_subscriber": "subscription.views.get_subscriber",
+                "settings": "sith.settings",
             },
             "bytecode_cache": {
                 "name": "default",