en to en_GB translation catalogue (4 entries)

[ctx: LXQtFancyMenuAppMapStrings]
en: Favorites
en_GB: Favourites

[ctx: LXQtFancyMenuWindow]
en: Add to Favorites
en_GB: Add to Favourites

[ctx: LXQtFancyMenuWindow]
en: LXQt Configuration Center
en_GB: LXQt Configuration Centre

[ctx: LXQtFancyMenuWindow]
en: Remove from Favorites
en_GB: Remove from Favourites
