Remove Duplicated Linebreaks from Text Area eftir Piro (piro_or)

Are you irritated from duplicated linebreaks when you try to copy & paste text from other local applications, for example E-mail client or text editors? It is caused by CR+LF linebreaks of Microsoft Windows. They are sometimes converted to duplicated "\n" in text fields on the web, so you may see needless linebreaks. This provides a new context menu command "Remove Duplicated Linebraks", it simply removes such stressful things.

If you select a part of an input field, this tries to modify text only selected range.