kdelibs4 - en to sr translation catalogue (2 entries)

[ctx: KNotificationRestrictions|]
en: Unknown Application
sr: непознат програм

[ctx: KStatusNotifierItem|]
en: <qt>Are you sure you want to quit <b>%1</b>?</qt>
sr: <qt>Желите ли заиста да напустите програм <b>%1</b>?</qt>
