EDIT

ref #6932 Migrate bulk editor handlers and add annotation merge support

ref #6932 Migrate bulk editor handlers (part I)

ref #6598 refactore method signature for remote handlers

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)

ref #6931 migrate uses view

ref #6595 remove e3 references

Fix possible NPE

Fix potential widget is disposed exception