web-services

Hey! When I was reading the docs and I saw api.background.task, the first thing that popped into my head was "but you can just use asyncio.create_task or loop,.run_in_executor for that without inventing something new!". But then I noticed that it also passes the context vars to the synchronous backround stuff, which is nice. Wonder why that's not the case in the stdlib, cause it would be nic

For the long term, we could clean up the code base a bit by internally using pathlib instead of os.path.join(....) and consorts. This is no vital or overly important task but it will help new contributors, to use it in new contributions and not introduce more old-style code, looking at the rest of the code base.

This is a pretty trivial (but longish) task and is a good first issue for new peo