GitLab

- Fixes icons in the WebManifest.
- Adds web monetization tags.
- Switch to deploying via IPFS. If CloudFlare's gateway causes us too much trouble we will continue using Netlify for the frontend but we'll try this out for now.

Update Rust crate base64 to 0.13.0

See merge request !3

Update Rust crate serde_derive to 1.0.117

See merge request !5

Update Rust crate array_iterator to v1

See merge request !7

Configure Renovate

See merge request !1

It seems like the GitLab runner expects some tools to be available.

It takes a while and may include things we don't want to share.

Because Gitlab CI doesn't appear to use bash.

Also switch to nullglob to avoid putting .. into the archive.