en to zh_CN translation catalogue (4 entries)

[ctx: The label used by assistive technologies describing a toolbar attached to a widget.]
en: Widget toolbar
zh_CN: 小部件工具栏

[ctx: The title displayed when a mouse is over a button that inserts a paragraph before a block.]
en: Insert paragraph before block
zh_CN: 在前面插入段落

[ctx: The title displayed when a mouse is over a button that inserts a paragraph after a block.]
en: Insert paragraph after block
zh_CN: 在后面插入段落

[ctx: Information to be read by screen reader about shortcuts to type around a widget]
en: Press Enter to type after or press Shift + Enter to type before the widget
zh_CN: 按下“Enter”键，在小组件后输入；按下“Shift+Enter”键，在小组件前输入
