Make Store.database_key field editable.

tailbone/views/stores.py

@@ -101,6 +101,7 @@ class StoreCrud(CrudView):
             include=[
                 fs.id.label("ID"),
                 fs.name,
+                fs.database_key,
                 fs.phone.label("Phone Number").readonly(),
                 fs.email.label("Email Address").readonly(),
                 ])