Its handlers are now more compact. This commit moves Handler classes in
handlers\ directory.
ResourceHandler ignores "hidden" files in the archive, and these are
used as markup templates in IndexPageHandler and FilesPageHandler.
wwwroot.zip contains ScummVM local webserver's resources, such as
template html pages, styles and images.
One can make it from wwwroot directory contents by running
make_archive.py script.
It's added to scummvm.rc, so it's included in the executable (it works
with MinGW, but I was unable to do that in VS yet).
IndexPageHandler is the one who returns these resources. It uses
index.html for "/". I'm replacing "{message}" with translated message,
so that's the way I thought the templates should work.
