Finish progress bar delivery method. Renamed from delivery-context-bar to delivery-progress-bar to better reflect what it does. Added as an option to choose for presentation format. Added upgrade script.
changing default of the edit of repeating events to 0, b/c it is much less frustrating for end users to notice that a change did not propagate to all events than it is to edit all repeating events b/c they didn't read an option carefully
make calendar::item::get.select_item_data_with_attachment behave like calendar::item::get.select_item_data where info of acs_event is prioritized over acs_activity