Extend JawrSpringController to detect a jawrHC query parameter and
rewrite the requestURI/requestURL to put it back as the first element
in the request path (e.g., "/bundle/foo.js?jawrHC=gzip_N1" ->
"/gzip_N1/bundle/foo.js").
Add tag parameter useQueryParam to the blwjawr script tag to convert the
outbound link rendering to use the jawrHC query parameter.