fix(server-routes): ignore all falsey values - fixes #1064

Author: shakyShane

lib/server/static-server.js

@@ -53,7 +53,7 @@ module.exports = function createServer (bs, scripts) {
          */
         .update("middleware", function (mw) {
 
-            if (!server.has("routes")) {
+            if (!server.get("routes")) {
                 return mw;
             }