StorageWizardDialog now runs LocalWebserver in "minimal mode" for
security reasons. In this mode server uses only those handlers which
state to support it.
There are two handlers which support minimal mode: IndexPageHandler
(which handles `code` requests needed by StorageWizardDialog) and
ResourceHandler (which provides inner resources like `style.css` or
`logo.png` from `wwwroot.zip` archive).
It now hides code fields not just when built with SDL_Net, but also when
LocalWebserver's using default port.
So that's why NETWORKING_LOCALWEBSERVER_ENABLE_PORT_OVERRIDE is defined
in localwebserver.h now.
It's enabled only when NETWORKING_LOCALWEBSERVER_ENABLE_PORT_OVERRIDE is
defined.
It's not defined, because override means we have to reconfigure our
redirect links somehow to use the override port.
It does redirect to "/files" on success, so user doesn't even see the
strange "/create" URL at all.
This commit is for keeping these handlers small, not making one
(FilesPageHandler in this case) do everything.
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.
That ClientHandler is made for responding GET requests. It calculates
stream's length, it allows to specify response code and headers, it can
be used to transfer any ReadStream.
