Fix ordering of code in HTML-lite pages

Fix #439 

:princess:

## Exhibit A

Before:

```
<style id="jsbin-css">body {
  background: #fac;
}</style></head><script>
document.addEventListener('DOMContentLoaded', function () {
  document.querySelector('body').innerText += " from js";
});
</script>
<script src="http://192.168.1.65:3000/js/render/edit.js"></script>
<script>jsbinShowEdit({"root":"http://192.168.1.65:3000","csrf":"MnB7KoVdIqOp/JeAyMXLRLYM"});</script>
<script src="http://192.168.1.65:3000/js/vendor/eventsource.js"></script>
<script src="http://192.168.1.65:3000/js/spike.js"></script>
</body><!DOCTYPE html>
<meta charset=utf-8 />
<title>JS Bin</title>

hello
```

After:

```
<!DOCTYPE html>
<meta charset=utf-8 />
<title>JS Bin</title>
<style id="jsbin-css">
body {
  background: #fac;
}
</style>

hello

<script>
document.addEventListener('DOMContentLoaded', function () {
  document.querySelector('body').innerText += " from js";
});
</script>
<script src="http://192.168.1.65:3000/js/render/edit.js"></script>
<script>jsbinShowEdit({"root":"http://192.168.1.65:3000","csrf":"MnB7KoVdIqOp/JeAyMXLRLYM"});</script>
<script src="http://192.168.1.65:3000/js/vendor/eventsource.js"></script>
<script src="http://192.168.1.65:3000/js/spike.js"></script>
```

## Exhibit B (was already ok)

Before:

```
<!DOCTYPE html>
<html>
<!--
  Created using 192.168.1.65:3000
  Source can be edited via http://192.168.1.65:3000/okedul/1/edit
-->
<head>
<meta charset=utf-8 />
<title>JS Bin</title>
<style id="jsbin-css">body {
  background: gold;
}</style></head>
<body>
  hello
<script>
console.log("Hello");
</script>
<script src="http://192.168.1.65:3000/js/render/edit.js"></script>
<script>jsbinShowEdit({"root":"http://192.168.1.65:3000","csrf":"MnB7KoVdIqOp/JeAyMXLRLYM"});</script>
<script src="http://192.168.1.65:3000/js/vendor/eventsource.js"></script>
<script src="http://192.168.1.65:3000/js/spike.js"></script>
</body>
</html>
```

After:

```
<!DOCTYPE html>
<html>
<!--
  Created using 192.168.1.65:3000
  Source can be edited via http://192.168.1.65:3000/okedul/1/edit
-->
<head>
<meta charset=utf-8 />
<title>JS Bin</title>

<style id="jsbin-css">
body {
  background: gold;
}
</style>
</head>
<body>
  hello
<script>
console.log("Hello");
</script>
<script src="http://192.168.1.65:3000/js/render/edit.js"></script>
<script>jsbinShowEdit({"root":"http://192.168.1.65:3000","csrf":"MnB7KoVdIqOp/JeAyMXLRLYM"});</script>
<script src="http://192.168.1.65:3000/js/vendor/eventsource.js"></script>
<script src="http://192.168.1.65:3000/js/spike.js"></script>
</body>
</html>
```