- Add a config whitelist

- Send the config values to the frontend
- Add a service class for exposing the config values
- Change the directives to inject both Features and Config
- Change directive users to make use of the new scope

endpoints/common.py

@@ -16,6 +16,7 @@ from auth import scopes
 from endpoints.api.discovery import swagger_route_data
 from werkzeug.routing import BaseConverter
 from functools import wraps
+from config import getFrontendVisibleConfig
 
 import features
 
@@ -119,6 +120,9 @@ def random_string():
 def render_page_template(name, **kwargs):
   resp = make_response(render_template(name, route_data=json.dumps(get_route_data()),
                                        feature_set=json.dumps(features.get_features()),
+                                       config_set=json.dumps(getFrontendVisibleConfig(app.config)),
+                                       mixpanel_key=app.config.get('MIXPANEL_KEY', ''),
+                                       is_debug=str(app.config.get('DEBUGGING', False)).lower(),
                                        cache_buster=random_string(),
                                        **kwargs))