refactor middlewares in their own folder, move buildFiles to libs/buildFiles

website/src/middlewares/forceRefresh.js

@@ -0,0 +1,9 @@
+module.exports.siteVersion = 1;
+
+module.exports.middleware = function(req, res, next){
+  if(req.query.siteVersion && req.query.siteVersion != module.exports.siteVersion){
+    return res.json(400, {needRefresh: true});
+  }
+
+  return next();
+};