move js about editor to static js folder

backstage/js/editor.js → backstage/static/js/editor.js

@@ -15,7 +15,7 @@ function isIndexExistInBlockArray(blockIndex, length) {
 const contentDiv = document.getElementsByClassName('ui segment')[0];
 const titleButton = document.getElementById('title_button');
 const submitButton = document.getElementById('submit_button');
-axios.get('/公仔與爵士鼓.md').then(function(response) {
+axios.get('/static/公仔與爵士鼓.md').then(function(response) {
   const content = response.data;
   var {blockArray, blockCount} = parseMd(content);
   var dataIndex;