Subscribes to named map changes to invalidate cache

lib/cartodb/server.js

@@ -167,6 +167,9 @@ module.exports = function(serverOptions) {
     app.layergroupAffectedTablesCache = layergroupAffectedTablesCache;
 
     var namedMapProviderCache = new NamedMapProviderCache(templateMaps, pgConnection, userLimitsApi, queryTablesApi);
+    ['update', 'delete'].forEach(function(eventType) {
+        templateMaps.on(eventType, namedMapProviderCache.invalidate.bind(namedMapProviderCache));
+    });
 
     var authApi = new AuthApi(pgConnection, metadataBackend, mapStore, templateMaps);