[Beta1][ManiaScript] Extension tags for all default modes

[TGYoshi]

I have a tiny suggestion, to add extension tags/labels/whatever they're called things to all default scripts, like Battle currently has.
You know, those +++ things.

This would especially help extending scripts like Elite and Joust, so we can add xmlrpc callbacks to them on this way.
Same counts for e.g. Royal, if that mode ever gets an update, the extensions are still alright.

So I'd say: Update please .