Suggestion: Adding a "close task" option to the "Log Task Time" dialogue

[Nico S]

What about adding a checkbox or additional button to the "Log Task Time" dialogue for directly closing a task?

So one could managing the tasks time and closing it within one single work step.

Or the other way round: 

Adding a configuration option to pop up the "Log Task Time" dialogue after every "completion" of a task.

Background:

I want to have a time log for every task I´m working on and don´t want to forget to log the time...

Thanks!