copy enemyitem & foldColNum & fix bug

editor.html

@@ -131,6 +131,10 @@
                         </tbody>
                     </table>
                 </div>
+                <div style="margin-top: -10px; margin-bottom: 10px">
+                    <button id="copyEnemyItem">复制属性</button>
+                    <button id="pasteEnemyItem">粘贴属性</button>
+                </div>
             </div>
             <div id='newIdIdnum'><!-- id and idnum -->
                 <input placeholder="新id（唯一标识符）"/>