Support serving .js.gz and .css.gz files in Mongoose

[GoogleCodeExporter]

The order of the MIME Types should be changed from:

{".gz",  3, "application/x-gunzip"},
{".js.gz",  6, "text/javascript"},

To:

{".js.gz",  6, "text/javascript"},
{".gz",  3, "application/x-gunzip"},

So that it will work out the correct MIME type for gzipped js files. This will 
probably have to be done for CSS files.

Original issue reported on code.google.com by bennett...@gmail.com on 11 Mar 2014 at 9:18