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

Conflicts:
- .github/ISSUE_TEMPLATE/bug_report.md
  Took our version.
- CONTRIBUTING.md
  Updated the embedded copy of upstream's version.
- README.md
  Took our version.
- app/policies/status_policy.rb
  Not a real conflict, took code from both.
- app/views/layouts/embedded.html.haml
  Added upstream's changes (dns-prefetch) and fixed
  `%body.embed`
- app/views/settings/preferences/show.html.haml
  Reverted some of upstream changes, as we have a
  page dedicated for flavours and skins.
- config/initializers/content_security_policy.rb
  Kept our version of the CSP.
- config/initializers/doorkeeper.rb
  Not a real conflict, took code from both.

spec/lib/activitypub/activity/create_spec.rb

@@ -105,6 +105,31 @@ RSpec.describe ActivityPub::Activity::Create do
       end
     end
 
+    context 'limited' do
+      let(:recipient) { Fabricate(:account) }
+
+      let(:object_json) do
+        {
+          id: [ActivityPub::TagManager.instance.uri_for(sender), '#bar'].join,
+          type: 'Note',
+          content: 'Lorem ipsum',
+          to: ActivityPub::TagManager.instance.uri_for(recipient),
+        }
+      end
+
+      it 'creates status' do
+        status = sender.statuses.first
+
+        expect(status).to_not be_nil
+        expect(status.visibility).to eq 'limited'
+      end
+
+      it 'creates silent mention' do
+        status = sender.statuses.first
+        expect(status.mentions.first).to be_silent
+      end
+    end
+
     context 'direct' do
       let(:recipient) { Fabricate(:account) }
 
@@ -114,6 +139,10 @@ RSpec.describe ActivityPub::Activity::Create do
           type: 'Note',
           content: 'Lorem ipsum',
           to: ActivityPub::TagManager.instance.uri_for(recipient),
+          tag: {
+            type: 'Mention',
+            href: ActivityPub::TagManager.instance.uri_for(recipient),
+          },
         }
       end