rubocop: fix various style issues.

script/fixes/059_fix_favorites.rb

@@ -0,0 +1,14 @@
+#!/usr/bin/env ruby
+
+require_relative "../../config/environment"
+
+def fix_favorites
+  Favorite.without_timeout do
+    # delete favorites with a nonexistent post_id
+    Favorite.where("NOT EXISTS (SELECT 1 FROM posts WHERE posts.id = favorites.post_id)").delete_all
+  end
+end
+
+def fix_migrations
+  ApplicationRecord.connection.execute("DELETE FROM scheme_migrations WHERE version = '201704142336170'")
+end