Configure backend for PostgreSQL and fix auth password_hash mapping

composer.json

@@ -61,7 +61,6 @@
         ],
         "post-create-project-cmd": [
             "@php artisan key:generate --ansi",
-            "@php -r \"file_exists('database/database.sqlite') || touch('database/database.sqlite');\"",
             "@php artisan migrate --graceful --ansi"
         ],
         "pre-package-uninstall": [