Project Duration in Gantt View

It would be useful to see the project duration in the chart (Gantt View).

The duration should be calculated as the difference (in working days or in calendar days, this might be a setting at the space level or at the project level) between the start date of the earliest starting task and the end date of the latest ending task.

This is especially usefull when you are planning a project following the waterfall metodology and would enable more analysis on the project/portfolio level, such as:

- Compare duration of different projects in a portfolio

- Keep track of delay of a project and relate this to his duration

- Keep track of progress and relate this to project duration

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