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

Conflicts:
- `app/controllers/activitypub/collections_controller.rb`:
  Conflict due to glitch-soc having to take care of local-only
  pinned toots in that controller.
  Took upstream's changes and restored the local-only special
  handling.
- `app/controllers/auth/sessions_controller.rb`:
  Minor conflicts due to the theming system, applied upstream
  changes, adapted the following two files for glitch-soc's
  theming system:
  - `app/controllers/concerns/sign_in_token_authentication_concern.rb`
  - `app/controllers/concerns/two_factor_authentication_concern.rb`
- `app/services/backup_service.rb`:
  Minor conflict due to glitch-soc having to handle local-only
  toots specially. Applied upstream changes and restored
  the local-only special handling.
- `app/views/admin/custom_emojis/index.html.haml`:
  Minor conflict due to the theming system.
- `package.json`:
  Upstream dependency updated, too close to a glitch-soc-only
  dependency in the file.
- `yarn.lock`:
  Upstream dependency updated, too close to a glitch-soc-only
  dependency in the file.

app/presenters/activitypub/activity_presenter.rb

@@ -0,0 +1,41 @@
+# frozen_string_literal: true
+
+class ActivityPub::ActivityPresenter < ActiveModelSerializers::Model
+  attributes :id, :type, :actor, :published, :to, :cc, :virtual_object
+
+  class << self
+    def from_status(status)
+      new.tap do |presenter|
+        presenter.id        = ActivityPub::TagManager.instance.activity_uri_for(status)
+        presenter.type      = status.reblog? ? 'Announce' : 'Create'
+        presenter.actor     = ActivityPub::TagManager.instance.uri_for(status.account)
+        presenter.published = status.created_at
+        presenter.to        = ActivityPub::TagManager.instance.to(status)
+        presenter.cc        = ActivityPub::TagManager.instance.cc(status)
+
+        presenter.virtual_object = begin
+          if status.reblog?
+            if status.account == status.proper.account && status.proper.private_visibility? && status.local?
+              status.proper
+            else
+              ActivityPub::TagManager.instance.uri_for(status.proper)
+            end
+          else
+            status.proper
+          end
+        end
+      end
+    end
+
+    def from_encrypted_message(encrypted_message)
+      new.tap do |presenter|
+        presenter.id = ActivityPub::TagManager.instance.generate_uri_for(nil)
+        presenter.type = 'Create'
+        presenter.actor = ActivityPub::TagManager.instance.uri_for(encrypted_message.source_account)
+        presenter.published = Time.now.utc
+        presenter.to = ActivityPub::TagManager.instance.uri_for(encrypted_message.target_account)
+        presenter.virtual_object = encrypted_message
+      end
+    end
+  end
+end

app/presenters/initial_state_presenter.rb

@@ -2,5 +2,5 @@
 
 class InitialStatePresenter < ActiveModelSerializers::Model
   attributes :settings, :push_subscription, :token,
-             :current_account, :admin, :text
+             :current_account, :admin, :text, :visibility
 end