add a retranslate chinese function

sentence_api/static/admin.html

@@ -96,6 +96,26 @@
     </section>
   </main>
 
+  <dialog id="retranslate-dialog">
+    <div class="dialog-heading">
+      <div>
+        <h2 id="retranslate-title">重新翻译中文字幕</h2>
+        <span id="retranslate-meta"></span>
+      </div>
+      <button id="close-retranslate-dialog" class="icon-button" type="button" aria-label="关闭">X</button>
+    </div>
+    <form id="retranslate-form" class="retranslate-form">
+      <p>会清空当前中文字幕并重新翻译。可指定专有名词译法，每行一条，格式为 <code>原文=中文</code>。例如 <code>Harimoto=哈瑞么托</code>，也可以把错误译名写在左边：<code>哈达马托=哈瑞么托</code>。</p>
+      <label>
+        <span>专有名词译法</span>
+        <textarea id="retranslate-terms" placeholder="Harimoto=哈瑞么托"></textarea>
+      </label>
+      <div class="retranslate-actions">
+        <button class="primary" type="submit">开始重新翻译</button>
+      </div>
+    </form>
+  </dialog>
+
   <dialog id="sentence-dialog">
     <div class="dialog-heading">
       <div>
@@ -114,6 +134,6 @@
     </div>
   </dialog>
 
-  <script src="/static/admin.js?v=admin-course-title-v1" defer></script>
+  <script src="/static/admin.js?v=admin-retranslate-v1" defer></script>
 </body>
 </html>