styleTypeAttrPattern should also search for type="text/css"

[GoogleCodeExporter]

Trying to compress <style type="text/css"></style>
the attribute type="text/css" should be removed, since it is the default value

The styleTypeAttrPattern matches (and the compressor later remove) 
type="text/style" , but the common value is "text/css". 
https://developer.mozilla.org/en-US/docs/Web/HTML/Element/style#Attributes

I'd suggest to match and remove both.

Original issue reported on code.google.com by [email protected] on 9 May 2014 at 7:42