* add "Open in MaskEditor" to context menu
* change save button name to 'Save to node' if open in node.
clear clipspace_return_node after auto paste
* * leak patch: prevent infinite duplication of MaskEditorDialog instance on every dialog open
* prevent conflict of multiple opening of MaskEditorDialog
* name of save button fix
* patch: brushPreview hiding by dialog
* consider close by 'esc' key on maskeditor.
* bugfix about last patch
* patch: invalid close detection
* 'enter' key as save action
* * batch support enhance
- pick index based on imageIndex on copy action
* paste fix on batch image node
* typo
---------
Co-authored-by: Lt.Dr.Data <lt.dr.data@gmail.com>