en to nn translation catalogue (3 entries)

[ctx: KStatusNotifierItem|@action:inmenu]
en: &Minimize
nn: &Minimer

[ctx: KStatusNotifierItem|@action:inmenu]
en: Quit
nn: Avslutt

[ctx: KStatusNotifierItem|@action:inmenu]
en: &Restore
nn: &Gjenopprett
