Updating tmux monitor.php and start.php to use Settings class instead of separate DB and Sites classes.
Changing all $db to $pdo, oops.
Fixing occurrence of $site I missed.
Replacing usage of DB() and Sites() with Settings, which uses less memory.
Oops, missed a couple of Sites().
Fixing missed or typoed $pdo.
More typoed $pdo
Adding magic method to Settings to treat non-existent fields as simple settings.
Fixing bad isset checks.
Changing occurrences of site class in smarty files.
Adding occurrence of site class missed in smarty files.
Updating Changelog.