Git diff pane status & proc info.

[mattpass]

If not running, show the nohup command to run as we have right now.

If we have git diff data but our indexer data is old (eg older than 30 secs) then mark git link in bottom left in red and set info in pane to note it doesn't appear to be running.

If we have got git diff data in last 30 secs show a message that it's running OK and the PID plus command to stop (eg pkill -9 1234). Mark link in green.

If we have git data list to show, show that as we have right now. If the line count changes compared to last time replace "git" text for 1 sec with number eg "9" to indicate 9 changed dirs/files.

Rename the process to be system/icecoder-tasks.php so it's easy to find the task by running ps aux | grep -i icecoder.