Move docs site to new domain

[thedavecarroll]

Move the docs site from bluebirdps.anovelidea.org to docs.bluebirdps.dev.

The work has been done on readthedocs.org.

Unfortunately, I did not use versioning for the external help url and when the docs are updated, any previous version would go to the latest version. This will break previous version online documentation where the command names are different, and the help will not be accurate.

This will be used to tack all of the documentation updates.