Refresh file list when there are queued snapshots (#697)

* add destroy hook

* refresh details modal in interval

* refactor to refresh assets list

* disable create snapshot button when there is a pending snapshot

bookmarks/frontend/behaviors/global-shortcuts.js

@@ -1,7 +1,9 @@
-import { registerBehavior } from "./index";
+import { Behavior, registerBehavior } from "./index";
+
+class GlobalShortcuts extends Behavior {
+  constructor(element) {
+    super(element);
 
-class GlobalShortcuts {
-  constructor() {
     document.addEventListener("keydown", this.onKeyDown.bind(this));
   }