Tests: make top of the HTML suite compliant with style guide

See http://contribute.jquery.org/style-guide/html/

(cherry-picked from 8356281bed643bb3d56ad02f52580a0e20dc0237)
Closes gh-2098

test/index.html

-<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
-<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en" dir="ltr" id="html">
+<!doctype html>
+<html lang="en" id="html">
 <head>
-	<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
-	<meta http-equiv="X-UA-Compatible" content="IE=Edge" />
+	<meta charset="utf-8">
 	<title>jQuery Test Suite</title>
-	<link rel="Stylesheet" media="screen" href="../external/qunit/qunit.css" />
-	<link rel="Stylesheet" media="screen" href="data/testsuite.css" />
-	<!-- Includes -->
+	<link rel="stylesheet" href="../external/qunit/qunit.css" />
+	<link rel="stylesheet" href="data/testsuite.css" />
 
 	<!--
-		We have to use previous jQuery to ensure testability with
+		We have to use previous jQuery as helper to ensure testability with
 		ajax-free builds (and non-interference when changing ajax internals)
 	-->
 	<script src="data/jquery-1.9.1.js"></script>
@@ -17,7 +15,6 @@
 	<script src="../external/qunit/qunit.js"></script>
 	<script src="../external/requirejs/require.js"></script>
 	<script src="../external/sinon/fake_timers.js"></script>
-	<script src="../external/sinon/timers_ie.js"></script>
 	<!-- See testinit for the list of tests -->
 	<script src="data/testinit.js"></script>
 
@@ -28,13 +25,6 @@
 	<script src="jquery.js"></script>
 
 	<script>
-		// html5shiv, enabling HTML5 elements to be used with jQuery
-		( "abbr article aside audio bdi canvas data datalist details figcaption figure footer header hgroup " +
-			"mark meter nav output progress section summary time video"
-		).replace(/\w+/g, function(n) {
-			document.createElement(n);
-		});
-
 		// Load tests if they have not been loaded
 		// This is in a different script tag to ensure that
 		// jQuery is on the page when the testrunner executes