initialize Db object early because otherwise ORM might be used unconfigured

classes/config.php

@@ -314,6 +314,12 @@ class Config {
 
 	static function sanity_check() {
 
+		/* we don't actually need the DB object right now but some checks below might ORM which won't be initialized
+			because it is set up in the Db constructor, which is why it's a good idea to do that as early as possible
+			it is a bit of a hack, maybe ORM should be initialized somewhere else (functions.php?) */
+
+		$pdo = Db::pdo();
+
 		$errors = array();
 
 		if (strpos(self::get(Config::PLUGINS), "auth_") === false) {