Add bower_components as it contains the resources used by github pages.

bower_components/jquery/src/css/var/isHidden.js

@@ -0,0 +1,13 @@
+define([
+	"../../core",
+	"../../selector"
+	// css is assumed
+], function( jQuery ) {
+
+	return function( elem, el ) {
+		// isHidden might be called from jQuery#filter function;
+		// in that case, element will be second argument
+		elem = el || elem;
+		return jQuery.css( elem, "display" ) === "none" || !jQuery.contains( elem.ownerDocument, elem );
+	};
+});