-- Run this once in phpMyAdmin (select the database, then SQL tab).
-- Adds default values for the new tiered-referral-commission feature.
-- Safe to run even if these keys already exist (no-op update).
INSERT INTO settings (setting_key, setting_value) VALUES ('referral_tier_percents', '15,10,5')
    ON DUPLICATE KEY UPDATE setting_key = setting_key;
INSERT INTO settings (setting_key, setting_value) VALUES ('first_purchase_bonus_gb', '1')
    ON DUPLICATE KEY UPDATE setting_key = setting_key;