Update Hardware section on top install page #400

[phillxnet]

Remove aging and link-fragile hardware product suggestion section. Move altered text to semantic formatting.

Fixes #400

Tangentially includes:

• addition of legacy warning note on linked-to KVM howto. See issue #353

Checklist

• [x] With the proposed changes no Sphinx errors or warnings are generated.
• [x] I have added my name to the AUTHORS file, if required (descending alphabetical order).

[phillxnet]

Patch product production published.