BestChat V119 - Cron setup

Use the existing cPanel Cron every 5 minutes:
*/5 * * * * /usr/local/bin/php /home/bbsasife/bestchat.online/scheduler.php >/dev/null 2>&1

V119 launches campaign and subscriber workers directly through PHP CLI from the scheduler. It no longer depends on the server being able to call its own domain over HTTP.
Keep the existing database. Do not run install.php.
