Merge branch 'main' into glitch-soc/merge-upstream

Conflicts:
- `README.md`:
  Our README is completely different. Discarded upstream changes.
- `app/javascript/packs/mailer.js`:
  We had removed the file. Move the changes to `app/javascript/core/mailer.js`.

app/views/about/more.html.haml

@@ -8,7 +8,7 @@
   .column-0
     .public-account-header.public-account-header--no-bar
       .public-account-header__image
-        = image_tag @instance_presenter.hero&.file&.url || @instance_presenter.thumbnail&.file&.url || asset_pack_path('media/images/preview.jpg'), alt: @instance_presenter.site_title, class: 'parallax'
+        = image_tag @instance_presenter.hero&.file&.url || @instance_presenter.thumbnail&.file&.url || asset_pack_path('media/images/preview.png'), alt: @instance_presenter.site_title, class: 'parallax'
 
   .column-1
     .landing-page__call-to-action{ dir: 'ltr' }

app/views/about/show.html.haml

@@ -8,7 +8,7 @@
 .landing
   .landing__brand
     = link_to root_url, class: 'brand' do
-      = svg_logo_full
+      = logo_as_symbol(:wordmark)
       %span.brand__tagline=t 'about.tagline'
 
   .landing__grid
@@ -53,7 +53,7 @@
 
       .hero-widget
         .hero-widget__img
-          = image_tag @instance_presenter.hero&.file&.url || @instance_presenter.thumbnail&.file&.url || asset_pack_path('media/images/preview.jpg'), alt: @instance_presenter.site_title
+          = image_tag @instance_presenter.hero&.file&.url || @instance_presenter.thumbnail&.file&.url || asset_pack_path('media/images/preview.png'), alt: @instance_presenter.site_title
 
         .hero-widget__text
           %p