<html> tag outside the shim shouldn't be there.

Previous does not pass validation. Now with more Jade and will still generate the ending </html>.

The goal is the following (adjusted whitespace):
```html
<!DOCTYPE html>
<!--[if IE 8]><html class="no-js lt-ie9" lang="en"><![endif]-->
<!--[if gt IE 8]><!--><html class="no-js" lang="en"> <!--<![endif]-->
<head>
```

But the current code renders to the following (adjusted whitespace)::
```html
<!DOCTYPE html>
<!--[if IE 8]><html class="no-js lt-ie9" lang="en" ><![endif]-->
<!--[if gt IE 8]><!--><html class="no-js" lang="en" ><!--<![endif]-->
<html>
<head>
```