fix: make beta warning less alarming

app/assets/javascripts/views/footer/footer-view.pug

@@ -37,10 +37,8 @@
         )
       .sk-app-bar-item.border(ng-if="ctrl.state.showBetaWarning")
       .sk-app-bar-item(ng-if="ctrl.state.showBetaWarning")
-        a.no-decoration.sk-label.title.uppercase(
-          href='https://github.com/standardnotes/forum/issues/1114',
-          rel='noopener',
-          target='_blank'
+        a.no-decoration.sk-label.title(
+          ng-click="ctrl.displayBetaDialog()"
         ) You are using a beta version of the app
     .center
       .sk-app-bar-item(ng-if='ctrl.arbitraryStatusMessage')

app/assets/javascripts/views/footer/footer_view.ts

@@ -23,7 +23,7 @@ import {
   STRING_UPGRADE_ACCOUNT_CONFIRM_BUTTON,
 } from '@/strings';
 import { PureViewCtrl } from '@Views/abstract/pure_view_ctrl';
-import { confirmDialog } from '@/services/alertService';
+import { alertDialog, confirmDialog } from '@/services/alertService';
 import { autorun, IReactionDisposer } from 'mobx';
 
 /**
@@ -568,6 +568,16 @@ class FooterViewCtrl extends PureViewCtrl<{}, {
     }
   }
 
+  displayBetaDialog() {
+    alertDialog({
+      title: 'You are using a beta version of the app',
+      text:
+        'If you wish to go back to a stable version, make sure to sign out ' +
+        'before installing it.<br>You can silence this warning in the ' +
+        '<em>Account</em> menu.'
+    });
+  }
+
   clickOutsideAccountMenu() {
     if (this.application && this.application.authenticationInProgress()) {
       return;