default time zone in websites

app/controllers/admin/communication/websites_controller.rb

app/models/communication/website.rb

app/models/communication/website/configs/base.rb

...cation/website/configs/default_content_security_policy.rb

...models/communication/website/configs/default_languages.rb

...odels/communication/website/configs/default_permalinks.rb

...dels/communication/website/configs/deuxfleurs_workflow.rb

...odels/communication/website/configs/development_config.rb

...models/communication/website/configs/production_config.rb

app/views/admin/communication/websites/_form.html.erb

...admin/communication/websites/agenda/events/_form.html.erb

config/locales/communication/en.yml

config/locales/communication/fr.yml

...154550_add_default_time_zone_to_communication_websites.rb

db/schema.rb

test/fixtures/communication/websites.yml