recurringtasks

Re-read config/recurringtasks.json and re-schedule all Recurring Task timers to match, so a save on www/recurringtasks.php (which writes that file via the generic api/configfile endpoint) takes effect without an fppd restart. Also handles an immediate "Test Run" of one task, run synchronously against the posted task definition (not a saved name), so the admin page can preview unsaved edits.