2 TODO's behavior in agenda and month views
5 Here are the rules for how/when/where should to-dos be displayed in agenda/month view:
7 * startDt doesn't influence to-do behavior, it's irrelevant
8 * To-dos without dueDt aren't shown
9 * The time component doesn't influence the behavior in month view, only agenda
10 * Overdue to-dos appear today, and not at dtDue, so we don't forget them
11 * In agenda, if the to-do is overdue and has time, it should appear in the all
12 day area because, since it's overdue, you must do it ASAP and not wait for the
15 * In agenda, a not-overdue to-do, with time, is drawn with the rectangle ending
16 at dtDue, and not starting at dtDue. If dtDue is at 00h00, then it should be
17 displayed in the previous day, ending at 23:59:59