Preserve linebreaks while copying

[DorKeinath]

Steps to reproduce

1. Create a discussion.
2. Write an answer with several lines separated through line breaks.
3. Mark this lines, copy it and paste it in an editor.

What happens

The text is inserted without line breaks.

What should happen

The format should be preserved.

Browser: Firefox 66

PrivateBin version: 1.2.1 and 1.1

I can reproduce this issue on https://privatebin.net: Yes

[rugk]

Indeed, the issue seems to be that we do not use real <br> line breaks, but just the Unicode characters for new line…(?)