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

plugins/printer/db/migrate/20181201000000_create_printer_jobs.rb

@@ -15,6 +15,6 @@ class CreatePrinterJobs < ActiveRecord::Migration[4.2]
       t.text :message
     end
 
-    add_index :printer_job_updates, [:printer_job_id, :created_at]
+    add_index :printer_job_updates, %i[printer_job_id created_at]
   end
 end