openteacher - en to zh_CN translation catalogue (3 entries)

en: Hide the browser!
zh_CN: 隐藏这个浏览器!

en: Hide the others; make space for the browser
zh_CN: 隐藏其他,扩大现在的浏览器区域

en: Enable hidden browser (hide it by moving the slider)
zh_CN: 开启隐藏浏览器(滑动滑块隐藏)
