No way to pass derived distro config parameters to JS side

[smithfarm]

When the JS side is initiated (in Resource.pm), config params are passed from the Perl side to the JS side. However, the derived distro has no way to pass its own config params. This is a design flaw that needs to be fixed.

What needs to happen is the _require_js() function in Resource.pm needs to call out to a function in Dispatch.pm to get additional parameters. This function will be a noop in App::MFILE::WWW, existing just to be optionally overlayed in the derived distro's Dispatch module.