[Feature Request] Delete tasks: enable remorse timer

[sphenotux]

Make the timer for deleting editable, e.g. via Settings
Currently fixed to 5 seconds. Sometimes feels quite long. Would like to set this to 2 or 3 seconds instead.

(E.g. the TaskList of Thomas Amler (GitHub) aka Armadillo allows this. I find it sexy. However, I quit using TaskList for the sake of ZuTun ;-).)

[fuchsmich]

This is set to 3sec now.