Reverts to AJAX usage

Author: seijiakiyama

src/dashboard/Settings/GeneralSettings.react.js

@@ -546,7 +546,7 @@ export default class GeneralSettings extends DashboardView {
                   cleanupNoteColor: 'orange',
                   showPurgeFilesModal: false,
                 });
-              }).catch((e) => {
+              }).fail((e) => {
                 this.setState({
                   cleanupFilesMessage: e.error,
                   cleanupNoteColor: 'red',

src/lib/ParseApp.js

@@ -341,13 +341,7 @@ export default class ParseApp {
 
   cleanUpFiles() {
     let path = '/apps/' + this.slug + '/orphan_files';
-    return fetch(path, {
-      method: 'POST',
-      headers: {
-        'X-Parse-Application-Id': this.applicationId,
-        'X-Parse-Master-Key': this.masterKey
-      }
-    });
+    return AJAX.post(path);
   }
 
   normalizePath(path) {