One pass for prepare request and response objects

lib/cartodb/server.js

@@ -811,17 +811,13 @@ function bootstrap(opts) {
     app.enable('jsonp callback');
     app.use(express.bodyParser());
 
-    app.use(function createRequestContext(req, res, next) {
+    app.use(function bootstrap$prepareRequestResponse(req, res, next) {
         req.context = req.context || {};
-        next();
-    });
-
-    // Use our step-profiler
-    app.use(function(req, res, next) {
         req.profiler = new windshaft.stats.Profiler({
             statsd_client: global.statsClient,
             profile: opts.useProfiler
         });
+        res.removeHeader('x-powered-by');
         next();
     });