make production future ready

This commit does the following:

Production start should use the following command `npm run
start-producion` this first runs bower install and builds the front end
app(react). Then it will use the `pm2Start` script. This script will set
up the pm2 daemons to run loopback in cluster mode. This script also use
`production-start` script instead of the regular `server` script.

The reasons are two fold: to ensure `server` is run in es7 mode, and to
wait for handshake from DB or kill itself if no DB can be found within a
certain amount of time.

server/debug-entry.js

@@ -1,4 +1,5 @@
+// use this file with runners like node-debug
+// or mocha.
 require('babel/register');
 var app = require('./server');
-
 app.start();