Remove duplicate code and style fixes

Author: differentreality

.rubocop_todo.yml

@@ -877,6 +877,8 @@ 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')

app/views/schedules/_schedule_item.html.haml

@@ -15,13 +15,6 @@
                       "data-user" => current_user.id }
       = event.title
 
-    - if current_user
-      = link_to('#', onClick: 'starClicked();') do
-        %span#star{ class: "fa fa-lg #{ event.favourite_users.exists?(current_user.id) ? 'fa-star' : 'fa-star-o' }", |
-                    "aria-hidden" =>"true", |
-                    "data-url" => conference_program_proposal_path(@conference.short_title, event.id), |
-                    "data-user" => current_user.id }
-
     - event.speakers_ordered.each do |speaker|
       = image_tag speaker.gravatar_url, :class => "img-circle pull-right speaker-pic", |
                                         :alt => speaker.name, |