Show the task result in Qt Creator progress bar

Description

The progress bars on the bottom right corner of Qt Creator are very useful for showing the status of asynchronous tasks. However, there is no indication about the result of the task. If the result is ok, the progress bars just disappears. 

It would be beneficial to see the end result of the task as well. For example, update checking takes quite a long time. If there are not updates, the bar just disappears. Could we add some textual status information: "Built ok", "No new updates" etc. to indicate to the user that the tasks have successfully completed. 

Effort estimate