Backend: auth for config and queries. Refactor of middleware exports

middleware/index.js

@@ -0,0 +1,8 @@
+module.exports = {
+  asyncWrapper: require('./asyncWrapper'),
+  auth: require('./auth'),
+  errorHandler: require('./errorHandler'),
+  upload: require('./multer'),
+  requireAuth: require('./requireAuth'),
+  requireBody: require('./requireBody'),
+};