* Add \Froxlor\Cron\TaskId for fixed task id naming * Replace Cronjob::inserttask numbers with \Froxlor\Cron\TaskId constants * Use TaskId in Froxlor\Cron\System\TasksCron * Use TaskId in Froxlor\System\Cronjob, simplify getOutstandingTasks. Rename lng['tasks'] cronjob task description. WARNING: DELETE_DOMAIN_PDNS, DELETE_DOMAIN_SSL now use %domain% * Remove Froxlor\System\Cronjob type 3 check