#339 - Update DiploPanel.vue _ copying-empty-lines-in-panel-4-should-insert-cr
An update of DiploPanel.vue allowing to paste some text including empty line, with several points:
- paste text at a cursor position or in replacement onto a range selection (also works after selection of whole page/ctrl+a)
- taking account of empty lines from copied transcription (from panel 4) and from plain text