Throw an error on a duplicate copy, expand website

[rileykarson]

Followup to #2199, we detected duplicate compiled but not copied files previously. This will need to rebase off that PR to succeed.

Release Note for Downstream PRs (will be copied)

[modular-magician]

Hi! I'm the modular magician, I work on Magic Modules.
This PR seems not to have generated downstream PRs before, as of 9a61394.

Pull request statuses

No diff detected in terraform-google-conversion.
No diff detected in Ansible.
No diff detected in Inspec.

New Pull Requests

I built this PR into one or more new PRs on other repositories, and when those are closed, this PR will also be merged and closed.
depends: hashicorp/terraform-provider-google-beta#1068
depends: hashicorp/terraform-provider-google#4294

[modular-magician]

Hi! I'm the modular magician, I work on Magic Modules.
I see that this PR has already had some downstream PRs generated. Any open downstreams are already updated to your most recent commit, 9a61394.

Pull request statuses

No diff detected in terraform-provider-google-beta.
No diff detected in terraform-google-conversion.
terraform-provider-google already has an open PR.
No diff detected in Ansible.
No diff detected in Inspec.

New Pull Requests

I didn't open any new pull requests because of this PR.

[danawillow]

I think hashicorp/terraform-provider-google#4294 also needs to be closed (or like, a new MM run to auto-close it or something)

[rileykarson]

Yep- after hitting bad Magician timing twice I figured I would just close that one by hand.