Use pre-signed URLs to download file versions

apps/files/src/components/FileInfoVersions.vue

@@ -43,8 +43,8 @@
     <div v-else>
       <span v-translate>No Versions available for this file</span>
     </div>
-  </div></template
->
+  </div>
+</template>
 <script>
 import Mixins from '../mixins.js'
 import { mapGetters } from 'vuex'
@@ -103,11 +103,9 @@ export default {
       const version = this.currentVersionId(file)
       const url = this.$client.fileVersions.getFileVersionUrl(this.currentFile.id, version)
 
-      const headers = new Headers()
-      headers.append('Authorization', 'Bearer ' + this.getToken)
-      headers.append('X-Requested-With', 'XMLHttpRequest')
-
-      return this.downloadFileFromUrl(url, headers, file.name)
+      return this.$client.signUrl(url).then(signedUrl => {
+        window.location = signedUrl
+      })
     }
   }
 }