Admin message

Due to an influx of spam, we have had to require each new account to be manually approved. Please register an account and then write an email to accountsupport@archlinux.org to get it approved. Sorry for the inconvenience.

Move away from luna
- [x] ~~Migrate git.archlinux.org to gitlab #6~~ (nuked: https://gitlab.archlinux.org/archlinux/infrastructure/-/merge_requests/436) - [x] Migrate mailman to a new vps #356
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