增加i18n支持

public/error/404.html

@@ -126,5 +126,6 @@
       <a class="wi-error__back" href="javascript:history.back()">返回上页</a>
     </div>
   </div>
+  <script>(function(){var lang=navigator.language||'';var locale=lang.startsWith('zh-TW')||lang.startsWith('zh-HK')?'zh_TW':lang.startsWith('zh')?'zh_CN':'en';var i18n={zh_CN:{title:'页面走丢了',desc:'你寻找的页面似乎不在这个小岛上',home:'回到首页',back:'返回上页',pageTitle:'页面走丢了'},zh_TW:{title:'頁面走丟了',desc:'你尋找的頁面似乎不在這個小島上',home:'回到首頁',back:'返回上頁',pageTitle:'頁面走丟了'},en:{title:'Page Not Found',desc:'The page you are looking for seems to have wandered off this island',home:'Back to Home',back:'Go Back',pageTitle:'Page Not Found'}};var t=i18n[locale];var el=document.querySelector('.wi-error__title');if(el)el.textContent=t.title;var desc=document.querySelector('.wi-error__desc');if(desc)desc.textContent=t.desc;var home=document.querySelector('.wi-error__home');if(home)home.textContent=t.home;var back=document.querySelector('.wi-error__back');if(back)back.textContent=t.back;document.title=t.pageTitle+' - WarmIsland';})();</script>
 </body>
 </html>