Timeout scheduled tasks based on CRON process status

1. create "LastRunProcessId" field (int, null, after "LastRunOn") in "scheduled-task" unit and show it grid/editing form as label - 0.5h
2. in the "\kScheduledTaskManager::getAll" method: - 0.5h
   1. don't use "Timeout" column
   2. select all scheduled tasks with "Status = Active"
   3. from them if process has "LastRunStatus = Running" and any of above condition are met, then exclude it from the list:
      • "LastRunProcessId is empty"
      • "LastRunProcessId isn't empty" AND process with specified PID is still running (posix_getpgid(...) !== false)
3. in the "\kScheduledTaskManager::run" method record current process id ("getmypid()") in place, where scheduled task status is changed into "Running" - 0.2h
4. remove "Timeout" field of "scheduled-task" unit (includes grid/adding/editing templates) - 0.3h
5. add "scheduled-task_ProcessStatusColor" tag, that will return "green" when process with PID from is still running AND return "grey" otherwise - 0.2h
6. when displaying value of "LastRunProcessId" field use "scheduled-task_ProcessStatusColor" tag to color it dynamically - 0.3h

Quote: 2h*1.4 = 3h