Add option to hide the event list summary

[pakerwreah]

Add option to hide the summary above the event list that says "All day: X Overdue: Y Agenda: Z"

[cuth]

For what it's worth, "Overdue" doesn't make sense for any reminder dates not in the past. Reminders for today or any date in the future would be "Due".

[pakerwreah]

It only shows "Overdue" for reminders in the past.