Improvements to repeat

Using this as a holding space for repeat improvements - Repeat should work for events. Notes too, I can't see an obvious use case for repeating notes but it adds no overhead. - Should be able to end a repeat after x number of repeats, or on a particular date. - Choose to update a repeat on current, future or all entries - More flexibility with repeat options - Choose wether tasks should repeat when complete, or when created - If choosing repeat when complete, repeating weekly/monthly/yearly events should repeat according to their original repetition period i.e. weekly task should repeat as a weekly task even if it gets moved to a daily task - Ensure that repetitions (especially events which have utc dates) work with DST - When repeating when complete -> choose wether data carries forward