External Linking CSS and JS?

I see alot of the javascript files are loaded internal in the application in dolphin. Is there a way I can load the css and js external on google cloud or amazon s3. Because of the amount of JS in the script it slows server down and external linking the JS will help free up more server ram to take in more visitors and members.

So far the code I find linking JS in php is in the file params.inc.php

Any way of linking CSS and JS without breaking anything?

//--- Add default CSS ---//
$oSysTemplate->addCssSystem(array(
    'default.css',
    'common.css',
	'common_phone.css',
	'common_tablet.css',
    'general.css',
	'general_phone.css',
    'anchor.css',
    'forms_adv.css',
	'join.css',
    'login_form.css',
    'top_menu.css',
    'icons.css',
	'loading.css',
));

//--- Add default JS ---//
$oSysTemplate->addJsSystem(array(
    'jquery.js',
    'jquery-migrate.min.js',
    'jquery.jfeed.js',
	'jquery.embedly.min.js',
	'jquery.ui.core.min.js',
	'jquery.ui.widget.min.js',
    'jquery.ui.position.min.js',
	'jquery.ui.tabs.min.js',
    'functions.js',
    'jquery.dolRSSFeed.js',
    'jquery.float_info.js',
    'jquery.webForms.js',
    'jquery.form.min.js',
	'jquery.dolEmbedly.js',
    'jquery.dolPopup.js',
	'jquery.dolRetina.js',
    'common_anim.js',
	'join.js',
    'login.js',
    'BxDolVoting.js',
    'user_status.js',
    'jquery.cookie.min.js',
));