Before the whole revamp for LvL (which I personally think is a good change) there was a website listed on the main page that had maps, player models etc. Can anyone tell me what the site name is? I can not find it myself

At a guess, Worldspawn Archive - ws.q3df.org/

That's exactly what I was looking for!!! Thanks!!

I have a question. How do you play a demo in console? I made a demo in the SuperHeroes Arena mod, but there is no playback option.

Try:
\demo <name of demo>

For example, I use the console to record a demo with:
\record demotest1

And to stop the demo with:
\stoprecord

And to play it back with:
\demo demotest1