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

Conflicts:
- Gemfile
- app/controllers/api/v1/search_controller.rb
  Conflict because we changed the number of default results to be
  configurable
- app/lib/settings/scoped_settings.rb
  Addition of a new “noindex” site-wide setting,
  conflict due to our change of the two other site-wide settings
  (default flavour and skin instead of theme)
- spec/controllers/application_controller_spec.rb
  Addition of a new “noindex” site-wide setting,
  conflict due to our change of the two other site-wide settings
  (default flavour and skin instead of theme)

app/javascript/mastodon/locales/defaultMessages.json

@@ -1155,6 +1155,19 @@
     ],
     "path": "app/javascript/mastodon/features/compose/containers/navigation_container.json"
   },
+  {
+    "descriptors": [
+      {
+        "defaultMessage": "Are you sure you want to log out?",
+        "id": "confirmations.logout.message"
+      },
+      {
+        "defaultMessage": "Log out",
+        "id": "confirmations.logout.confirm"
+      }
+    ],
+    "path": "app/javascript/mastodon/features/compose/containers/navigation_container.json"
+  },
   {
     "descriptors": [
       {