Add support for searching for new line/paragraph characters in find/replace

I often find in copy-pasting from pdfs that it puts text on a new paragraph where there should be just a space (which is an issue to do with pdf-formatting, not libre office). I could solve this problem when it occurs by find&replace but it seems libre office has no support for find&replace of these characters.

See also → How may I identify the line return/carriage return in Writer?