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

Conflicts:
- app/controllers/about_controller.rb
- app/controllers/tags_controller.rb
- app/views/about/show.html.haml
- spec/views/about/show.html.haml_spec.rb

app/views/layouts/public.html.haml

@@ -1,22 +1,23 @@
 - content_for :content do
   .public-layout
-    .container
-      %nav.header
-        .nav-left
-          = link_to root_url, class: 'brand' do
-            = image_tag asset_pack_path('logo_full.svg'), alt: 'Mastodon'
+    - unless @hide_navbar
+      .container
+        %nav.header
+          .nav-left
+            = link_to root_url, class: 'brand' do
+              = image_tag asset_pack_path('logo_full.svg'), alt: 'Mastodon'
 
-          - if Setting.profile_directory
-            = link_to t('directories.directory'), explore_path, class: 'nav-link optional'
-          = link_to t('about.about_this'), about_more_path, class: 'nav-link optional'
-          = link_to t('about.apps'), 'https://joinmastodon.org/apps', class: 'nav-link optional'
-        .nav-center
-        .nav-right
-          - if user_signed_in?
-            = link_to t('settings.back'), root_url, class: 'nav-link nav-button webapp-btn'
-          - else
-            = link_to t('auth.login'), new_user_session_path, class: 'webapp-btn nav-link nav-button'
-            = link_to t('auth.register'), open_registrations? ? new_user_registration_path : 'https://joinmastodon.org/#getting-started', class: 'webapp-btn nav-link nav-button'
+            - if Setting.profile_directory
+              = link_to t('directories.directory'), explore_path, class: 'nav-link optional'
+            = link_to t('about.about_this'), about_more_path, class: 'nav-link optional'
+            = link_to t('about.apps'), 'https://joinmastodon.org/apps', class: 'nav-link optional'
+          .nav-center
+          .nav-right
+            - if user_signed_in?
+              = link_to t('settings.back'), root_url, class: 'nav-link nav-button webapp-btn'
+            - else
+              = link_to t('auth.login'), new_user_session_path, class: 'webapp-btn nav-link nav-button'
+              = link_to t('auth.register'), open_registrations? ? new_user_registration_path : 'https://joinmastodon.org/#getting-started', class: 'webapp-btn nav-link nav-button'
 
     .container= yield