Build: Move externals from /lib/ to /external/

Author: scottgonzalez

libs/qunit/qunit.css renamed to external/qunit/qunit.css

@@ -7,8 +7,8 @@
 	<meta http-equiv="X-UA-Compatible" content="IE=Edge" />
 
 	<!-- QUnit -->
-	<link rel="stylesheet" href="../libs/qunit/qunit.css" media="screen">
-	<script src="../libs/qunit/qunit.js"></script>
+	<link rel="stylesheet" href="../external/qunit/qunit.css" media="screen">
+	<script src="../external/qunit/qunit.js"></script>
 
 	<!-- Load a jQuery and jquery-migrate plugin file based on URL -->
 	<script src="testinit.js"></script>