Feature request: Please add confirmation before generating new self-signed SSL cert

Please add a confirmation for generating a self-signed SSL cert in Virtualmin. When you have a domain selected, go to Server Configuration -> Manage SSL certificate -> Signing Request. If you click on Generate Self-Signed Key, it will replace your existing ssl.* files without warning.

Reasoning: It's easy to hit the wrong button on accident... The "Generate Now" button at least doesn't do anything "permanent" because it writes the new key to ssl.newkey, and it's not a tragedy to lose the CSR file.