ref #6932 Fix new element handler and save
ref #6932 Fix intitial layouting of bulk editor
ref #6932 Migrate bulk editor handlers and add annotation merge support
ref #6932 Migrate bulk editor handlers (part I)
ref #6932 Migrate bulk context menu (non-functional)
ref #6932 Migrate bulk editor (search and results display working)
ref #6932 Migrate bulk editor (non-stable)