kdelibs4 - en to sl translation catalogue (3 entries)

[ctx: KTreeWidgetSearchLine|@info:placeholder]
en: Search…
sl: Išči…

[ctx: KTreeWidgetSearchLine|@title:menu]
en: Search Columns
sl: Išči po stolpcih

[ctx: KTreeWidgetSearchLine|@optipn:check]
en: All Visible Columns
sl: Vsi vidni stolpci
