Add "What's New" button in the Help Page

This allows user to re-access the modal if they accidentally dismissed it, never got it (bug?), or simply just want to see it again.

static/app-strings.json

@@ -2259,6 +2259,8 @@
   "Still Valid Until": "Still Valid Until",
   "Active channel": "Active channel",
   "Select your default active channel": "Select your default active channel",
+  "What's New": "What's New",
+  "See what are the latest features and changes in Odysee.": "See what are the latest features and changes in Odysee.",
   "This account has livestreaming disabled, please reach out to hello@odysee.com for assistance.": "This account has livestreaming disabled, please reach out to hello@odysee.com for assistance.",
   "Attach images by pasting or drag-and-drop.": "Attach images by pasting or drag-and-drop.",
   "There was a network error, but the publish may have been completed. Wait a few minutes, then check your Uploads or Wallet page to confirm.": "There was a network error, but the publish may have been completed. Wait a few minutes, then check your Uploads or Wallet page to confirm.",

ui/page/help/index.js

@@ -1,3 +1,14 @@
 import HelpPage from './view';
+import { connect } from 'react-redux';
+import { doOpenModal } from 'redux/actions/app';
+import { selectHomepageAnnouncement } from 'redux/selectors/settings';
 
-export default HelpPage;
+const select = (state) => ({
+  announcement: selectHomepageAnnouncement(state),
+});
+
+const perform = {
+  doOpenModal,
+};
+
+export default connect(select, perform)(HelpPage);

ui/page/help/view.jsx

@@ -7,9 +7,35 @@ import Page from 'component/page';
 import Card from 'component/common/card';
 import I18nMessage from 'component/i18nMessage';
 
-export default function HelpPage() {
+import * as MODALS from 'constants/modal_types';
+
+type Props = {
+  announcement: string,
+  doOpenModal: (string, ?{}) => void,
+};
+
+export default function HelpPage(props: Props) {
+  const { announcement, doOpenModal } = props;
+
   return (
     <Page className="card-stack">
+      {announcement && (
+        <Card
+          title={__("What's New")}
+          subtitle={__('See what are the latest features and changes in Odysee.')}
+          actions={
+            <div className="section__actions">
+              <Button
+                label={__("What's New")}
+                icon={ICONS.FEEDBACK}
+                button="secondary"
+                onClick={() => doOpenModal(MODALS.ANNOUNCEMENTS)}
+              />
+            </div>
+          }
+        />
+      )}
+
       <Card
         title={__('Visit the %SITE_NAME% Help Hub', { SITE_NAME })}
         subtitle={__('Our support posts answer many common questions.')}