big ui update, page search + full text

- split file chooser from coll index, insert as header, make file chooser collapsible
- revamp collection index to be responsive
- add separate sorter component, used for collection index and pages
- combine 'curated lists' + pages, with page search + narrative
- ensure page + narrative lists are collapsible
- page search: support title, url and full text search if available, using flexsearch
- page search: keyword highlighting, load all pages, showing in increments of 100
- page and resource search: delay search to 1/4 sec of inactivity to avoid too many queries
- electron app: ensure noCache is set to true for local files
- embedding: remove separate embed.js, just use ui.js for embed as well
- embedding: support embedding iframe in a local origin with just sw.js and ui.js: sw.js serves index.html,
<replay-web-page> embed injects ui.js into iframe
- sw.js, new service worker entry point
- sw and ww inited only from <replay-app-main>, ui.js loaded from <replay-web-page> embed component

src/ui.js

@@ -1,4 +1,5 @@
 import { App } from './appmain';
+import { Chooser } from './chooser';
 import { CollIndex } from './coll-index';
 import { Coll } from './coll';
 import { CuratedList } from './curated-lists';
@@ -6,34 +7,7 @@ import { GDrive } from './gdrive';
 import { Loader } from './loader';
 import { Pages } from './pages';
 import { Replay } from './replay';
+import { Sorter } from './sorter';
 import { URLResources } from './url-resources';
+import { Embed } from './embed';
 
-import { register } from 'register-service-worker';
-
-
-// ===========================================================================
-// ===========================================================================
-
-async function main(url) {
-  let resolve, reject; 
-  const p = new Promise((res, rej) => {
-    resolve = res;
-    reject = rej;
-  });
-  
-  register(url, {
-    registrationOptions: { scope: './' },
-    ready (registration) {
-      console.log('Service worker is active.');
-      resolve();
-    },
-    error (error) {
-      console.error('Error during service worker registration:', error);
-      reject();
-    }
-  });
-
-  await p;
-}
-
-main(__SW_PATH__);