Comments: Added wysiwyg link selector, updated tests, removed command

- Updated existing tests with recent back-end changes, mainly to use
  HTML data.
- Removed old comment regen command that's no longer required.

resources/views/comments/comments.blade.php

@@ -40,6 +40,9 @@
             <script src="{{ versioned_asset('libs/tinymce/tinymce.min.js') }}" nonce="{{ $cspNonce }}"></script>
             @include('form.editor-translations')
         @endpush
+        @push('post-app-html')
+            @include('entities.selector-popup')
+        @endpush
     @endif
 
 </section>