kdelibs4 - en to ko translation catalogue (3 entries)

[ctx: KTreeWidgetSearchLine|@info:placeholder]
en: Search…
ko: 찾기…

[ctx: KTreeWidgetSearchLine|@title:menu]
en: Search Columns
ko: 열에서 찾기

[ctx: KTreeWidgetSearchLine|@optipn:check]
en: All Visible Columns
ko: 모든 보이는 열
