Triggered when user starts to drag an element.
Triggered when drag ended - element was dropped.
Used when using: Remove from DB mode Will be triggered when selected(swiped or trowed away from repeating group) thing will be deleted from database.
Used for action: Copy sorted to new DB Will be triggered when all data was successfully copied to new database.
Used for action: Save sorted DB field list Will be triggered when the new order was successfully saved to database.
Triggered when State, Reordered things IDs was updated and ready to use.