List projects by last updated task
Updating a project task should bump it to the top of the list.
The problem is that I can't list projects and sort by date changed on tasks without adding all the tasks to the view.
The distinct option is not working.
Aggregation is behaving strangely.
Grouping isn't working either.
Issue: Views relationships with multi-valued entity reference fields invalidate Distinct query option
TODO: Take a look at how comment tracks last comment time.