Update Backup Message to Action

[mikeselander]

Now that Bronson has introduced the ability to save out your database in situations other than a destroy (SO handy 🙏), the default message is no longer always appropriate.

For example, when halting a box, the message still displays as if destroying: Do you want to backup the database before destroying?

I would expect the message to instead say Do you want to backup the database before halting?