en to ga translation catalogue (3 entries)

note: (itstool) path: info/title
en: Preferences
ga: Sainroghanna

note: (itstool) path: info/title
en: Image View
ga: Amharc Íomhánna

note: (itstool) path: info/title
en: Slideshow
ga: Taispeántas Sleamhnán
