(Re: @gabrys) Make WikiaTracker into an AMD module

Conflicts:
	extensions/wikia/JSVariables/JSVariables.php
	resources/wikia/modules/tracker.js
(Re: @gabrys) Make WikiaTracker into an AMD module

Conflicts:
	extensions/wikia/JSVariables/JSVariables.php
	resources/wikia/Resources.php
	resources/wikia/modules/tracker.js