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

Conflicts:
	app/controllers/accounts_controller.rb
	app/javascript/mastodon/locales/pl.json
	app/views/about/more.html.haml

Conflicts in `accounts_controller.rb` resolved by taking upstream's
version + our `use_pack`.

Conflicts in `pl.json` resolved by taking upstream's changes.

Conflicts in `aboute/more.html.haml` resolved by taking upstream's changes.

app/views/about/show.html.haml

@@ -109,7 +109,7 @@
                 %p= t 'about.about_mastodon_html'
               %div.contact
                 %h3= t 'about.administered_by'
-                = render 'administration'
+                = account_link_to(@instance_presenter.contact_account, link_to(t('about.learn_more'), about_more_path, class: 'button button-alternative'))
 
             = render 'features'
 
@@ -130,7 +130,7 @@
                 %p= t 'about.about_mastodon_html'
               %div.contact
                 %h3= t 'about.administered_by'
-                = render 'administration'
+                = account_link_to(@instance_presenter.contact_account, link_to(t('about.learn_more'), about_more_path, class: 'button button-alternative'))
 
             = render 'features'