Add zh-CN translation (#355)

app/static/settings/translations.json

@@ -167,6 +167,34 @@
         "save-as": "Salvar Como...",
         "github-link": "Ver no GitHub"
     },
+    "lang_zh-CN": {
+        "search": "搜索",
+        "config": "配置",
+        "config-country": "按国家过滤搜索结果",
+        "config-country-help": "注意：启用后，只有在所选国家*部署*的网站会出现在搜索结果中。",
+        "config-lang": "界面语言",
+        "config-lang-search": "搜索语言",
+        "config-near": "接近",
+        "config-near-help": "城市名",
+        "config-block": "屏蔽",
+        "config-block-help": "逗号分隔的网站列表",
+        "config-nojs": "显示 NoJS 链接",
+        "config-dark": "深色模式",
+        "config-safe": "安全搜索",
+        "config-alts": "替换社交媒体链接",
+        "config-alts-help": "使用尊重隐私的第三方网站替换 Twitter/YouTube/Instagram 等链接。",
+        "config-new-tab": "在新标签页打开链接",
+        "config-images": "完整尺寸图片搜索",
+        "config-images-help": "（实验性）为桌面版图片搜索添加“查看图片”选项。这会降低图片结果缩略图的分辨率。",
+        "config-tor": "使用 Tor",
+        "config-get-only": "仅限 GET 请求",
+        "config-url": "站点根 URL",
+        "config-css": "自定义 CSS",
+        "load": "载入",
+        "apply": "应用",
+        "save-as": "另存为...",
+        "github-link": "在 GitHub 上查看"
+    },
     "lang_si": {
         "search": "සොයන්න",
         "config": "වින්‍යාසය",