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

Conflicts:
- .eslintrc.yml
  Removed, as upstream removed it.
- app/controllers/admin/statuses_controller.rb
  Minor code cleanup when porting one of our features.
- app/models/account.rb
  Note length validation has changed upstream.
  We now use upstream's validation (dropped legacy glitch-soc
  account metadata stuff) but with configurable limit.
- app/services/post_status_service.rb
  Upstream has added support for scheduled toots, refactoring
  the code a bit. Adapted our changes to this refactoring.
- app/views/stream_entries/_detailed_status.html.haml
  Not a real conflict, changes too close.
- app/views/stream_entries/_simple_status.html.haml
  Not a real conflict, changes too close.

app/models/concerns/account_associations.rb

@@ -15,6 +15,7 @@ module AccountAssociations
     has_many :mentions, inverse_of: :account, dependent: :destroy
     has_many :notifications, inverse_of: :account, dependent: :destroy
     has_many :conversations, class_name: 'AccountConversation', dependent: :destroy, inverse_of: :account
+    has_many :scheduled_statuses, inverse_of: :account, dependent: :destroy
 
     # Pinned statuses
     has_many :status_pins, inverse_of: :account, dependent: :destroy

app/models/concerns/account_finder_concern.rb

@@ -12,6 +12,10 @@ module AccountFinderConcern
       find_remote(username, domain) || raise(ActiveRecord::RecordNotFound)
     end
 
+    def representative
+      find_local(Setting.site_contact_username.gsub(/\A@/, '')) || Account.local.find_by(suspended: false)
+    end
+
     def find_local(username)
       find_remote(username, nil)
     end