add hpp to address express vulnerability

server/server.js

@@ -27,6 +27,7 @@ var R = require('ramda'),
     expressValidator = require('express-validator'),
     forceDomain = require('forcedomain'),
     lessMiddleware = require('less-middleware'),
+    hpp = require('hpp'),
 
     passportProviders = require('./passport-providers'),
     /**
@@ -59,6 +60,7 @@ app.use(lessMiddleware(path.join(__dirname, '/public')));
 app.use(logger('dev'));
 app.use(bodyParser.json());
 app.use(bodyParser.urlencoded({ extended: true }));
+app.use(hpp());
 app.use(expressValidator({
   customValidators: {
     matchRegex: function (param, regex) {