Shaken not stirred (7.x-1.0) - en to unknown language translation catalogue (6 entries)

en: Content
target: 内容

en: Core
target: 内核

en: Header
target: 页眉

en: Right Sidebar
target: 右边栏

en: Main menu
target: 主菜单

en: Secondary menu
target: 次级菜单
