chore: rubocop

chore: fix api test conventions

chore: rubocop -A spec/

chore: more rubocop -A

fix failing test

rubocop fixes

removes helper methods that are in my opinion dead code

more rubocop fixes

rubocop -a --auto-gen-config

db/migrate/20130718183100_create_settings.rb

@@ -8,7 +8,7 @@ class CreateSettings < ActiveRecord::Migration[4.2]
       t.timestamps
     end
 
-    add_index :settings, [:thing_type, :thing_id, :var], unique: true
+    add_index :settings, %i[thing_type thing_id var], unique: true
   end
 
   def self.down