add conf app and related test and settings

conf/urls/admin.py

@@ -0,0 +1,8 @@
+from django.conf.urls import url
+
+from ..views import WebsiteConfigAPI, SMTPAPI
+
+urlpatterns = [
+    url(r'^smtp$', SMTPAPI.as_view(), name="smtp_admin_api"),
+    url(r'^website$', WebsiteConfigAPI.as_view(), name="website_config_api"),
+]