Adds silent mode to AngularJS.

1. Add link to ngSilent.js file

2. Connect the module

   var site = angular.module('site', ['module1', 'ngSilent', 'ngRoute']);

IMPORTANT 'ngSilent' should be defined before 'ngRoute'.

 var site = angular.module('site', ['module1', 'ngRoute', 'ngSilent']);

This will not work.

3. Add $ngSilentLocation wherever you want:

   function SomeController($ngSilentLocation)

and then

 $ngSilentLocation.silent('/new/path/');

URL will be changed but related controller is not called.