backup: rename back backuplisting.js to backups.js

this was a transitional rename till I figured out how to split
it in backuptargets.js

src/routes/test/archives-test.js

@@ -6,7 +6,7 @@
 'use strict';
 
 const archives = require('../../archives.js'),
-    backupListing = require('../../backuplisting.js'),
+    backups = require('../../backups.js'),
     common = require('./common.js'),
     expect = require('expect.js'),
     superagent = require('@cloudron/superagent');
@@ -19,8 +19,8 @@ describe('Archives API', function () {
         remotePath: 'app_appid_123',
         encryptionVersion: null,
         packageVersion: '1.0.0',
-        type: backupListing.BACKUP_TYPE_APP,
-        state: backupListing.BACKUP_STATE_CREATING,
+        type: backups.BACKUP_TYPE_APP,
+        state: backups.BACKUP_STATE_CREATING,
         identifier: 'appid',
         dependsOn: [ ],
         manifest: { foo: 'bar' },
@@ -33,7 +33,7 @@ describe('Archives API', function () {
 
     before(async function () {
         await setup();
-        appBackup.id = await backupListing.add(appBackup);
+        appBackup.id = await backups.add(appBackup);
         archiveId = await archives.add(appBackup.id, {}, auditSource);
     });
     after(cleanup);