Client side page notification for all ES Store pages

This commits a client side script (notifications.js) which exposes a single method msg that can be used to show messages. It wraps the  noty notification framework (url: http://ned.im/noty/) , and defaults to alerts if the framework is not present.

Usage:

notify.msg({ text: 'Hello World!'}); 

The object passed into the function should mirror the structure described in the Noty documentation (url: http://ned.im/noty/#creating-a-noty).