"Zero Times" menu option

[verm]

There needs to be an option (and thus bound to a hotkey) to zero the times of the selected lines.

The workaround of 'shift times back by 9 hours' is silly as this tool is meant to shift times, not zero times.

There are also many cases where you may want to retime a certain section, it's easier to just zero all the times and re-time it than fiddling around.