An easier and more useful way of scheduling tasks

Setting task deadlines a given date does not always make sense, and probably makes less sense the longer into the future you are trying to schedule. Astrid could needs a way to schedule in a less fine grained way. To achieve this, one could let the user schedule a task to the granularity of their choice: to the minute (like today), hour, day, week, month and even year.

See https://blueprints.launchpad.net/astrid/+spec/schedule-view for suggestion on workflow improvement using task scheduling.