Counting contributions to forked projects

Currently commits to forked repositories are not being counted among contributions on profile page.

Is this expected behavior ?

I think that contributions to forked repositories should be also counted and displayed in contributions calendar. Then, when someone creates a merge request, and it gets eventually merged, those contributions can be counted again - in my opinion it is ok, as it gives bigger picture of contributor's work.

Do we have docs page that explains how contributions are counted ?

cc @JobV, @dzaporozhets