Autocorrect new rubocop offenses

app/controllers/admin/conferences_controller.rb

@@ -8,7 +8,7 @@ module Admin
 
     def index
       # Redirect to new form if there is no conference
-      if Conference.count == 0
+      if Conference.none?
         redirect_to new_admin_conference_path
         return
       end

app/controllers/admin/roles_controller.rb

@@ -69,7 +69,7 @@ module Admin
       end
 
       # The conference must have at least 1 organizer
-      if @role.name == 'organizer' && state == 'false' && @role.users.count == 1
+      if @role.name == 'organizer' && state == 'false' && @role.users.one?
         redirect_to admin_conference_role_path(@conference.short_title, @role.name),
                     error: 'The conference must have at least 1 organizer!'
         return

app/controllers/admin/volunteers_controller.rb

@@ -3,6 +3,7 @@
 module Admin
   class VolunteersController < Admin::BaseController
     include VolunteersHelper
+
     load_and_authorize_resource :conference, find_by: :short_title
 
     def index

app/controllers/application_controller.rb

@@ -3,6 +3,7 @@
 class ApplicationController < ActionController::Base
   before_action :set_paper_trail_whodunnit
   include ApplicationHelper
+
   add_flash_types :error
   protect_from_forgery with: :exception, prepend: true
   before_action :store_location

app/controllers/conferences_controller.rb

@@ -50,14 +50,14 @@ class ConferencesController < ApplicationController
         ).order('tracks.name')
       end
       if splashpage.include_booths
-        @booths = @conference.confirmed_booths.order('title')
+        @booths = @conference.confirmed_booths.order(:title)
       end
     end
     if splashpage.include_registrations || splashpage.include_tickets
-      @tickets = @conference.tickets.order('price_cents')
+      @tickets = @conference.tickets.order(:price_cents)
     end
     if splashpage.include_lodgings
-      @lodgings = @conference.lodgings.order('name')
+      @lodgings = @conference.lodgings.order(:name)
     end
     if splashpage.include_sponsors
       @sponsorship_levels = @conference.sponsorship_levels.eager_load(