Retire semantic_form_for

Also a buttload of form cleanups...

app/controllers/admin/conferences_controller.rb

@@ -68,7 +68,6 @@ module Admin
 
     def new
       @conference = Conference.new
-      @organizations = Organization.accessible_by(current_ability, :update).pluck(:name, :id)
     end
 
     def create

app/controllers/admin/programs_controller.rb

@@ -12,11 +12,12 @@ module Admin
     def update
       authorize! :update, @conference.program
       @program = @conference.program
+      params['program']['languages'] = params['program']['languages'].join(',') if params['program']['languages'].present?
       @program.assign_attributes(program_params)
       send_mail_on_schedule_public = @program.notify_on_schedule_public?
       event_schedules_count_was = @program.event_schedules.count
 
-      if @program.update(program_params)
+      if @program.save
         ConferenceScheduleUpdateMailJob.perform_later(@conference) if send_mail_on_schedule_public
         respond_to do |format|
           format.html do
@@ -40,7 +41,7 @@ module Admin
     private
 
     def program_params
-      params.require(:program).permit(:rating, :schedule_public, :schedule_interval, :schedule_fluid, :languages, :blind_voting, :voting_start_date, :voting_end_date, :selected_schedule_id)
+      params.require(:program).permit(:rating, :schedule_public, :schedule_interval, :schedule_fluid, :blind_voting, :voting_start_date, :voting_end_date, :selected_schedule_id, :languages)
     end
   end
 end

app/controllers/admin/questions_controller.rb

@@ -3,7 +3,7 @@
 module Admin
   class QuestionsController < Admin::BaseController
     load_and_authorize_resource :conference, find_by: :short_title
-    load_and_authorize_resource through: :conference, except: [:new, :create]
+    load_and_authorize_resource except: [:new, :create]
 
     def index
       authorize! :index, Question.new(conference_id: @conference.id)

app/controllers/admin/registrations_controller.rb

@@ -20,7 +20,7 @@ module Admin
       respond_to do |format|
         format.html
         format.json do
-          render json: RegistrationDatatable.new(view_context: view_context, conference: @conference)
+          render json: RegistrationDatatable.new({}, conference: @conference, view_context: view_context)
         end
         format.pdf { render 'index', layout: false }
         format.xlsx do

app/controllers/admin/tickets_controller.rb

@@ -17,7 +17,7 @@ module Admin
 
     def create
       @ticket = @conference.tickets.new(ticket_params)
-      if @ticket.save(ticket_params)
+      if @ticket.save
         redirect_to admin_conference_tickets_path(conference_id: @conference.short_title),
                     notice: 'Ticket successfully created.'
       else