Suggestions for tracking

This what I suggest in order to ease project tracking.
Please bear in mind that I don't know well Task Juggler yet, and that I don't speak Ruby – thus i can hardly fin my way into the code.

How does it work, if I understand well

Recording the progress

Tracking is possible in two ways – mutually exclusives.

1. If the task is effort based, by declaring the 'work' already accomplished (either directly, possibly in a 'timesheet', or through 'booking' attribute) and/or the 'remaining' work. If the task