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

Conflicts:
- `app/services/resolve_url_service.rb`:
  The private toot search by URL hack has been revamped upstream.
  Took upstream's version.

app/workers/account_merging_worker.rb

@@ -0,0 +1,18 @@
+# frozen_string_literal: true
+
+class AccountMergingWorker
+  include Sidekiq::Worker
+
+  sidekiq_options queue: 'pull'
+
+  def perform(account_id)
+    account = Account.find(account_id)
+
+    return true if account.nil? || account.local?
+
+    Account.where(uri: account.uri).where.not(id: account.id).find_each do |duplicate|
+      account.merge_with!(duplicate)
+      duplicate.destroy
+    end
+  end
+end