Fix rubocop

Author: differentreality

.rubocop_todo.yml

@@ -884,6 +884,8 @@ Rails/HasAndBelongsToMany:
     - 'app/models/question.rb'
     - 'app/models/registration.rb'
     - 'app/models/vchoice.rb'
+    - 'app/models/event.rb'
+    - 'app/models/user.rb'
 
 # Offense count: 20
 # Configuration parameters: Include.

app/controllers/proposals_controller.rb

@@ -8,7 +8,6 @@ class ProposalsController < ApplicationController
   # We authorize manually in these actions
   skip_authorize_resource :event, only: [:confirm, :restart, :withdraw]
 
-
   def index
     @event = @program.events.new
     @event.event_users.new(user: current_user, event_role: 'submitter')