Add webpack cold reloading

On changes to the react bundle
webpack will store the current redux state
in localStorage, waits (to allow the server to restart)
then refreshes the page. On page load, it checks if it
has state stored and loads it into the app.

server/server.js

@@ -3,12 +3,14 @@ var pmx = require('pmx');
 pmx.init();
 
 var _ = require('lodash'),
+    Rx = require('rx'),
     loopback = require('loopback'),
     boot = require('loopback-boot'),
     expressState = require('express-state'),
     path = require('path'),
     setupPassport = require('./component-passport');
 
+Rx.config.longStackSupport = process.env.NODE_DEBUG !== 'production';
 var app = loopback();
 var isBeta = !!process.env.BETA;