The Reminders app in iOS 5 can be very handy for creating quick and simple task lists or reminders without having to resort to third-party apps, and with Mountain Lion these Reminders can be easily synced via iCloud and managed on your Mac as well. Unfortunately, its flexibility for repeating reminders is somewhat limited, at least on the surface. Users are given a choice of only five repeat intervals: Every Day, Every Week, Every 2 Weeks, Every Month…