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good pattern for allowing modules to add their own hooks to item forms! 1) Album, photo and movie forms now all use edit_item as the group and we publish item_edit_form and item_edit_form_completed events which makes it much easier in the module to handle all events. They can still differentiate based on $item->type if they want to. 2) Added tag::clear_all() and tag::compact() functions which takes the place of hiwilson's tag::update() function and is now used in tag_event::item_delete(). This provides a simple API that allows us to have a lot less event handling code. It's less efficient than what hiwilson was doing before in that it will delete and re-add tags, but if that ever turns out to be a performance issue we can do something about it then.