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/messages/db/migrate/20160226000000_add_email_to_message.rb

@@ -1,6 +1,6 @@
 class AddEmailToMessage < ActiveRecord::Migration[4.2]
   def change
     add_column :messages, :salt, :string
-    add_column :messages, :received_email, :binary, :limit => 1.megabyte
+    add_column :messages, :received_email, :binary, limit: 1.megabyte
   end
 end