policy(minor): Move policy-related code to separate package

passbook/app_gw/middleware.py

@@ -27,7 +27,7 @@ class ApplicationGatewayMiddleware:
         handler = RequestHandler(app_gw, request)
 
         if not handler.check_permission():
-            to_url = 'https://%s/?next=%s' % (CONFIG.get('domains')[0], request.get_full_path())
+            to_url = 'https://%s/?next=%s' % (CONFIG.y('domains')[0], request.get_full_path())
             return RedirectView.as_view(url=to_url)(request)
 
         return handler.get_response()

passbook/app_gw/proxy/handler.py

@@ -15,7 +15,7 @@ from passbook.app_gw.proxy.response import get_django_response
 from passbook.app_gw.proxy.rewrite import Rewriter
 from passbook.app_gw.proxy.utils import encode_items, normalize_request_headers
 from passbook.core.models import Application
-from passbook.core.policies import PolicyEngine
+from passbook.policy.engine import PolicyEngine
 
 SESSION_UPSTREAM_KEY = 'passbook_app_gw_upstream'
 IGNORED_HOSTNAMES_KEY = 'passbook_app_gw_ignored'