[#1147] Use a version of youtube we can trust, blow away the rest.

players/youtube/popcorn.youtube.js

@@ -1,5 +1,5 @@
 // A global callback for youtube... that makes me angry
-var onYouTubePlayerAPIReady = function() {
+window.onYouTubePlayerAPIReady = function() {
 
   onYouTubePlayerAPIReady.ready = true;
   for ( var i = 0; i < onYouTubePlayerAPIReady.waiting.length; i++ ) {
@@ -7,6 +7,8 @@ var onYouTubePlayerAPIReady = function() {
   }
 };
 
+window.YT = null;
+
 onYouTubePlayerAPIReady.waiting = [];
 
 Popcorn.getScript( "http://www.youtube.com/player_api" );

players/youtube/popcorn.youtube.unit.html

@@ -4,6 +4,7 @@
   <title>Popcorn YouTube Player</title>
   <link rel="stylesheet" href="../../test/qunit/qunit.css" type="text/css" media="screen">
   <script src="../../test/qunit/qunit.js"></script>
+  <script src="http://s.ytimg.com/yt/jsbin/www-widgetapi-vflCAfh6H.js"></script>
   <!--
     do not move - this must be called immediately prior to popcorn.js.
   -->