Enable exporting of events to CSV

app/controllers/management/management_controller.rb

@@ -1,3 +1,4 @@
+require 'csv'
 module Management
   class ManagementController < ::ApplicationController
     before_action :authenticate_user!, :authorize_user!

app/views/management/events/index.csv.erb

@@ -0,0 +1,5 @@
+<%- csv_headers = %w{id title subtitle type track language paticipants status} -%>
+<%= CSV.generate_line(csv_headers).html_safe -%>
+<%- @events.each do |event| -%>
+  <%= CSV.generate_line([event.id, event.title, event.subtitle, event.event_type.name, event.track.name, event.language, participant_names_or_emails(event).join(', '), event.status]).html_safe -%>
+<%- end -%>