## About The Pull Request
- replaces the ntnet_relays global list with ``get_machines_by_type``
- renames ``transfer_access`` var on PDA to ``download_access`` &
``required_access`` to ``run_access`` to better describe what they do,
because on more than one ocassion I've confused myself with the two
terms and ended up doing something unintentional (see:
https://github.com/tgstation/tgstation/pull/74269)
## Why It's Good For The Game
Kills a useless global list and makes pda code a little less confusing.
## Changelog
Nothing player-facing.
78f04be9f8