Changes

Unreleased

Consolidate cloud-reference, cloud-howtos, and cloud-tutorials
Adjust links to accompany renaming to cloud-docs
Adjust intersphinx references to accompany consolidation into single repository
Rename top-level directories to howtos, reference, and tutorials
Refactored content about connectivity concerns to dedicated section at crate-client-tools
Improve the appearance of the index/home page
Disable version chooser. This project is not versioned.
Rework "deploy" index page