Proposal: select/unselect all the files/checkbox

<%- if @topic_view.topic.tags.present? %>
<%= t 'js.tagging.tags' %>: <%- @topic_view.topic.tags.each do |t| %> <%= t %> <%- end %>
<% end %>

In admin panel, for FILES management, a select/unselect all the files/checkbox displayed seems to be essential !