BinariesServlet doesn't set Expires header

Without the expires header the binaries don't get cached properly and the browser will try to refetch the binaries every time.

The StaticResourceServlet does the following:

if (lastModified > 0L)

{ response.setDateHeader("Last-Modified", lastModified); long expires = (System.currentTimeMillis() - lastModified); response.setDateHeader("Expires", expires + System.currentTimeMillis()); response.setHeader("Cache-Control", "max-age=" + (expires / 1000)); }

this logic should be added to the BinariesServlet as well.

It could also be useful to be able to add a init parameter with which caching for certain resources can be turned off completely by explicity setting Cache-Control: no-cache headers.