Merge pull request #1587 from noesya/file_hints

app/helpers/application_helper.rb

app/models/communication/block.rb

app/views/admin/application/featured_image/_edit.html.erb

...admin/communication/blocks/components/file/_edit.html.erb

...dmin/communication/blocks/components/image/_edit.html.erb

app/views/admin/communication/blocks/edit.html.erb

...min/communication/blocks/templates/gallery/_edit.html.erb

...admin/communication/blocks/templates/sound/_edit.html.erb

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

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

config/application.rb

config/locales/en.yml

config/locales/fr.yml

db/schema.rb