Database Migrated to Aiven

[mikofski]

pvfree users, if you find any issues on https://pvfree.azurewebsites.net/, try the alternate site: https://pvfree.alwaysdata.net/ - I had to migrate to a new database provider (Aiven) because the old provider, Elephant SQL, is ending service next January. You can also post issues or comments here on GitHub.