Prompt to use ConfigDB by default during installation
I've installed Pleroma a few times lately and it says "Do you want to manage the configuration in the database? [y/N]" and I've been thinking that "yes" should be the default for 2.1. I think ConfigDB has improved a lot since 2.0 and comes with many advantages, we should encourage users to enable it.
It hints that you should run
mix pleroma.config migrate_to_db afterwards, but should probably be a bit more explicit about that, or maybe even make it part of the installer process.