feat: add config option to show/hide Store ID; default value

tests/test_app.py

@@ -0,0 +1,17 @@
+# -*- coding: utf-8; -*-
+
+from wuttjamaican.testing import ConfigTestCase
+
+from sideshow import app as mod
+from sideshow.orders import OrderHandler
+
+
+class TestSideshowAppProvider(ConfigTestCase):
+
+    def make_provider(self):
+        return mod.SideshowAppProvider(self.config)
+
+    def test_get_order_handler(self):
+        provider = self.make_provider()
+        handler = provider.get_order_handler()
+        self.assertIsInstance(handler, OrderHandler)