Argh, I'm so tempted to add it right now

I'll wait for a race or two though, to see if the current code works alright. In the meanwhile, I'll try to use it for the RPLinfo page! Thanks again, dstien!
In the meanwhile, more changes are up: for Zak, a few administration buttons to make his life easier; for everyone else... a secret feature that will appear in about an hour!

Also added a check for duplicate replays, in case someone refreshes the submit page or something like that.